Environment terminology · MLC-0121

Environment terms: I (1,291)

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IAQ BackgrounderA component of the IAQ Tools for Schools Action Kit (http://www.epa.gov/iaq/schools/actionkit.html) that...
IAQ ChecklistA component of the IAQ Tools for Schools Action Kit (http://www.epa.gov/iaq/schools/actionkit.html)...
IAQ Coordinator1. An individual at the school and/or school district level who provides leadership and coordination of IAQ...
IAQ Management Plan1. A component of the IAQ Tools for Schools Kit, specifically, a set of flexible and specific steps for...
IAQ TeamPeople who have a direct impact on IAQ in the schools (school staff, administrators, school board members...
IBR Guidance - Incorporation By ReferenceEPA's current guidance for States that incorporate the Federal regulations by reference can be found on the...
IbuprofenIbuprofen (eye" bue proe' fen) is a propionic acid NSAID similar to ketoprofen and naproxen. Like other...
Ice AugerPortable gasoline or electric powered engine connected to a rotating helical shaft for boring through the...
Ice CoreA cylindrical section of ice removed from a glacier or an ice sheet in order to study climate patterns of the...
Ice CoverDuring the present time, the extent, especially the thickness, of glacier ice on a land surface. Also the...
Ice CrystalGenerally only occurring in very cold regions, they are falling ice crystals in the form of needles, columns...
Ice FogAtmospheric suspension of highly reflective ice crystals.
Ice Nuclei DevelopmentThe development of any particle that serves as a nucleus in the formation of ice crystals in the atmosphere.
Ice PelletPrecipitation of transparent or translucent pellets of ice, which are round or irregular hard grains of ice...
Ice SheetA glacier of considerable thickness and more than 50,000 sq km in area. It forms a continuous cover of ice...
Ice Shelf1. A sheet of very thick ice with a level or gently undulating surface. It is attached to the land on one...
Icosahedral VirusThe virus has an icosahedral capsid
Identical FurnaceTwo or more furnaces that are identical in design, including manufacturer, dimensions, production capacity...
Identifiable Biospecimen1. Biospecimen for which the identity of the subject is or may readily be ascertained by the investigator or...
Identifiable Private Information1. Private information for which the identity of the subject is or may readily be ascertained by the...
identification code1. The unique code assigned to each generator, transporter, and treatment, storage, or disposal facility by...
Identify Probable CauseA step in the Stressor Identification process in which the proposed cause is described, the evidence for its...
Identity Self ServiceEPA staff must complete a onetime registration in ECMS, using this application...
Idle Speed1. Speed, expressed as the number of revolutions of the crankshaft per unit of time (e.g., rpm), at which the...
Idle Test ProcedureThe idle emission test procedure is designed to determine the raw concentration (in percent) of CO in the...
IEM ApplicationReflect problem formulations and solution approaches that are transparent and holistic,establishing a view of...
IEM ScienceTransdisciplinary, involving the integration of social, economic, and environmental science.
IEM Stakeholder CommunityA group of individuals who contribute to shared development of integrated environmental science by engaging...
IEM TechnologyProvides the means to express, integrate, and share the science of IEM. It provides standards and tools to...
IfosfamidePositional isomer of cyclophosphamide which is active as an alkylating agent and an immunosuppressive agent.
IgneousA type of rock formed when molten volcanic rock has cooled and solidified.
Igneous Rock1. Rock formed when molten rock (magma) that has cooled and solidified (crystallized).
Ignitability1. Ignitable wastes can create fires under certain conditions. Examples include liquids, such as solvents...
Ignitability CharacteristicThe characteristic which identifies wastes that can readily catch fire and sustain combustion.
Ignitability Corrosivity Reactivity ToxicityChemical properties listed in 40 CFR 261 which characterize hazardous wastes
Ignitable1. Capable of bursting into flames easily.
III-V CellHigh-efficiency solar cell made from materials including Group III and Group V elements from the periodic...
IleumThe final section of the small intestine.
IliumThe largest of three bones that make up each half of the pelvic girdle.
Ill HealthIdentifiable, adverse physical or mental condition arising from and/or made worse by a work activity and/or...
IllustratorAdobe Illustrator is a vector-based drawing program. It is used to create print quality line-art drawings...
IlluviationThe gain of material when suspended soil particles are deposited.
IM240A high-tech, transient dynamometer automobile emissions test that takes up to 240 seconds.
IMAGE1. A representation of information produced by radiant energy, such as light.
Image AnalysisA technique in geostatistics used to restore a degraded image or interpret images that have been contaminated...
Image MapIn Web page development, an image map is a graphic image defined so that a user can click on different areas...
ImagesGraphics, photography, artwork or individual frames from a motion picture.
ImagingProcess of producing a visual representation of emissions that may otherwise be invisible to the naked eye.
Imaging RadarImaging radar are radar systems used in remote sensing usually produce images of some kind. The most common...
Imaging work stationConsists of a microcomputer with a high-resolution color monitor and accompanying software which allows the...
ImbibitionIn this context, the absorption of water by seeds as the earliest step in seed germination
Imhoff Cone1. A clear cone-shaped container marked with graduations. The cone is used to measure the volume of...
ImidaclopridA systemic neonicotinoid insecticide
ImidazolesCompounds containing 1,3-diazole, a five membered aromatic ring containing two nitrogen atoms separated by...
ImitationA behavior that occurs when an animal immediately mimics the actions of another animal while they are in each...
Immediate Family1. Includes only spouse, children, stepchildren, foster children, parents, stepparents, foster parents...
Immediate Hypersensitivity1. Immediate hypersensitivity reaction - type I reaction, involves immunoglobulin E (IgE)-mediated release of...
Immediate OutcomeThe changes in program participants' knowledge, attitudes, and behavior that occur at certain times during...
Immediate UseA chemical substance is for the “immediate use” of a person if it is under the control of, and used only by...
Immediately Dangerous to Life and HealthThe maximum level to which a healthy individual can be exposed to a chemical for 30 minutes and escape...
Immersion Cold Cleaning MachineCold cleaning machine in which the parts are immersed in the solvent when being cleaned. A remote reservoir...
Immigrant Population(Population of) aliens admitted for legal permanent residence in the United States.
Imminent HazardOne that would likely result in unreasonable adverse effects on humans or the environment or risk...
Imminent ThreatA high probability that exposure is occurring.
Immiscibility1. The inability of two or more substances or liquids to readily dissolve into one another, such as soil and...
immiscibleThe chemical property where two or more liquids or phases do not readily dissolve in one another, such as...
ImmobilizationThe process by which plant usable forms of N in the soil become unavailable for subsequent crop growth...
immobilization and mineralizationIn mineralization, the nitrogen (N) in plant tissue is converted by soil microbes into a form (nitrate) that...
Immune CellCell in the immune system that is involved in host defense. This category may include lymphocytes, monocytes...
Immune Response ProcessAny immune system response of an organisms to an internal or invasive threat.
immune statusImmune status is a frequently used term, so it is surprising that definitions were not readily available...
Immune System1. All internal structures and processes providing defense against disease-causing organisms such as viruses...
Immune System DisordersA disorder resulting from an abnormality in the immune system. -- 2003
Immune System MeasurementMeasurements indicating the functioning of body's defense mechanism against foreign organisms or substances...
Immune System PhenomenaThe characteristic properties and processes involved in immunity and an organism's immune response.
Immunity1. The power an animal has to resist and/or overcome an infection to which most of its species are...
Immunization1. Technique used to cause an immune response that results in resistance to a specific disease, especially an...
Immunoassay1. A test for a constituent or class of constituents based on the antibody/antigen reaction.
ImmunoassaysProcedure that utilizes specific antibodies to detect specific antigens. Two common types of immunoassays are...
ImmunochromatographyA type of affinity chromatography where antibodies are used in the affinity capture reaction on the solid...
immunocompromisedIndividuals with a weakened immune system, making them susceptible to additional infections.
Immunodeficiency1. Inability to produce a normal complement of antibodies or immunologically sensitized T cells, especially...
ImmunogenAny substance that can elicit an immune response.
ImmunoglobulinsMulti-subunit proteins which function in immunity. They are produced by B lymphocytes from the immunoglobulin...
Immunologic Deficiency SyndromesSyndromes in which there is a deficiency or defect in the mechanisms of immunity, either cellular or humoral.
Immunologic Factor InteractionImmunologic Factor Interaction involves temporary non-covalent binding through intermolecular physical forces...
Immunological SynapseThe interface between T-cells and antigen-presenting cells. Supramolecular organization of proteins takes...
ImmunopathologyStudy of the immune system's response to a particular disease
ImmunosuppressionOccurs if the immune system's ability to protect the body from disease is lessened, perhaps by certain...
ImmunotoxicityToxicity that impairs or damages the immune system.
ImmunotoxinSemisynthetic conjugates of various toxic molecules, including radioactive isotopes and bacterial or plant...
IMO Marine FuelFuel that is ECA marine fuel or global marine fuel.
Impact1. change in the chemical, physical (including habitat) or biological quality or condition of a waterbody...
Impact AssessmentThe assessment of the environmental consequences of energy and natural resource consumption and waste...
Impact CategoriesClassifications of human health and environmental effects caused by a product throughout its life cycle.
Impact DeformationApplying impact force to a part to permanently deform or shape it. Impact deformation may include mechanical...
Impact, environmentalAny change to the environment, whether adverse or beneficial, wholly or partially resulting from an...
Impact Evaluation1. A form of outcome evaluation that assesses the net effect of a program by comparing program outcomes with...
Impact IndicatorsImpact indicators measure the potential for an impact to occur rather than directly quantifying the actual...
Impact SurfaceInterior or exterior surface that is subject to damage by repeated sudden force such as certain parts of door...
Impact TheoryThe beliefs, assumptions, and expectations inherent in a program about the nature of the change brought about...
Impacted Immersion CoatingHigh performance maintenance coating formulated and recommended for application to steel structures subject...
Impact/ImpactsThe effect or output of an activity, product or substance on the environment or human health, whether adverse...
Impact-Resistant CoatingCoating designed to resist chipping caused by road debris.
ImpactsThe direct environmental effects of climate change that might be addressed in a RAINE plan or product.
ImpairedA state of a waterbody that does not meet state water quality standards. Under the Clean Water Act, section...
Impaired Catchment1. The Impaired Catchment layer includes catchment assessment units that are too polluted or otherwise...
Impaired (Category 4 and 5)An impaired water is a waterbody that is impaired and on the CWA Section 303(d) list of impaired waters...
Impaired Cell Membrane IntegrityImpaired Cell Membrane Integrity consists of activities that interfere with, or restrain, fabrication...
Impaired Cytoskeletal IntegrityImpaired Cytoskeletal Integrity consists of activities that interfere with, or restrain, fabrication...
Impaired Individual1. Has a physical or mental impairment that does not substantially limit major life activities but that is...
Impaired, Other CauseImpaired, other cause is a ‘miscellaneous’ reporting category used for dissolved gases, floating debris and...
Impaired ParametersWater quality parameters that do not meet state or tribal specific water quality standards and/or thresholds.
Impaired Stream"Definition 1: The Impaired Streams layer includes streams that are too polluted or otherwise degraded to...
Impaired Streams1. The Impaired Streams layer includes streams that are too polluted or otherwise degraded to meet the water...
Impaired Water Bodies1. The Impaired Water Bodies layer includes bodies of water that are too polluted or otherwise degraded to...
Impaired Water Body1. Under section 303(d) of the Clean Water Act, states, territories, and authorized tribes are required to...
Impaired Water Points1. The Impaired Water Points layer includes points that are too polluted or otherwise degraded to meet the...
Impaired waterbody1. A waterbody (i.e., stream reaches, lakes, waterbody segments) with chronic or recurring monitored...
Impaired Waters1. Waterways that do not meet state water quality standards. Under the Clean Water Act, section 303(d)...
Impaired Waters (Impairments; 303(d))Waters with chronic or recurring monitored violations of the applicable numeric or narrative water quality...
Impairment1. Detrimental effect on the biological integrity of a waterbody caused by an impact that prevents attainment...
Impairment CategoriesImpairments take many forms. Water impairments are identified across 32 categories in "How's My Waterway"...
ImpellerA rotating set of vanes in a pump designed to pump or lift water.
Imperata cylindricaCogon grass is a perennial, rhizomatous grass that grows from 2 to over 4 feet in height. The leaves are...
Imperfect FungusThe Fungi Imperfecti / Deuteromycetes group is not accepted in the 2007 classification by Hibbett, D.S., et...
imperiledVulnerable to extinction throughout its range.
Impermeable1. Not easily penetrated. The property of a material or soil that does not allow, or allows only with great...
Impermeable LayerA layer of solid material, such as rock or clay, which does not allow water to pass through.
Impervious1. A hardened surface or area that does not allow water to pass through. For example, roads, rooftops...
Impervious AreaA hard surface area (e.g., parking lot) that prevents or retards the entry of water into the soil, thus...
Impervious Chemical Protective ClothingIs “impervious” to a chemical substance if the substance causes no chemical or mechanical degradation...
Impervious Solid SurfaceSolid surfaces which are nonporous and thus unlikely to absorb spilled PCBs within the short period of time...
Impervious Surface1. A material that does not allow, or allows only with great difficulty, the infiltration of water.
Impervious surfaces1. Surfaces such as paved streets, parking lots, and building rooftops that prevent precipitation from...
ImpingementEntrapment of all life stages of fish and shellfish on the outer part of an intake structure or against a...
Impingement Mortality Calculation BaselineEstimate of impingement mortality and entrainment that would occur at your site assuming that: the cooling...
Implement Clean Air Allowance TradingIncludes activities for the development, implementation, and evaluation of federal programs for the trading...
Implement Geospatial ServicesImplement Geospatial Services includes activities to acquire, design, build, deploy, and maintain geospatial...
Implementation1. Development of a program. The process of putting all program functions and activities into place.
Implementation FailureThe program does not adequately perform the activities specified in the program design that are assumed to be...
Implementation field programThe decision by EMAP to make a long-term commitment to provide scientifically defensible estimates of current...
Implementation Plan1. The document or section of a document detailing the suite of corrective actions needed to reduce pollution...
Implementation StrategyThe plan for development of a program and procedure for ensuring the fulfillment of intended functions or...
ImplementedDeveloped or put into place.
ImplementingActivity related to planning, developing, establishing, carrying-out, improving, or maintaining programs for...
Implementing Agency1. State or local agency that obtains delegation for an accidental release prevention program under subpart...
Implicit Margin of SafetyThis refers to the Implicit Margin of Safety for the Associated Pollutant as identified in the TMDL.
Import1. Land on, bring into, or introduce into, any place subject to the jurisdiction of the United States whether...
Import FacilityAny facility where an importer imports fuel, fuel additive, or regulated blendstock.
Import for Commercial PurposesTo import with the purpose of obtaining an immediate or eventual commercial advantage for the importer, and...
Import in Bulk Form1. To import a chemical substance (other than as part of a mixture or article) in any quantity, in cans...
Imported CoatingCoating manufactured outside the United States has been brought into the United States for sale or...
Imported CommodityCommodities of foreign origin entering the United States, as well as goods of domestic origin returned to the...
Imported Component Declared Value(1) The value at which components are declared by the importer to the U.S. Customs Service at the date of...
Imported MaterialSame meaning as in § 720.3 of this chapter.
Importer1. Any person, company, or organization of record that for any reason brings a product into the United States...
Imports1. Refers to municipal solid waste and recyclables that have been transported to a state or locality for...
Impositionthe arrangement of pages on a printed sheet, which when the sheet is finally printed on both sides, folded...
Impossibility TheoremA theorem to demonstrate that it is impossible to aggregate individual preferences through majority voting...
Impoundment1. A body of water or sludge confined by a dam, dike, floodgate, or other barrier.
ImpregnationProcess of filling pores of a formed powder part, usually with a liquid such as a lubricant, or mixing...
Imprinting BehaviorRapid learning or behavioral patterning that occurs at critical point in very early stages of animal...
Improved DischargeVolume, composition, and location of an applicant's discharge following: (1) Construction of planned outfall...
Improved Sinkhole1. A naturally occurring karst depression or other natural crevice found in volcanic terrain and other...
Improvised Nuclear DeviceAn illicit nuclear weapon that was bought, stolen, or otherwise originated from a nuclear state. Improvised...
Impulsive NoiseAcoustic event characterized by very short rise time and duration.
ImpulsivityPerson makes hasty actions that occur in the moment without first thinking about them and that may have high...
ImpuritiesSame meaning as in § 710.3 of this chapter.
Impurity1. Any chemical element present in an additive that is not included in the chemical formula or identified in...
In - water SegmentPortion of the hazardous substance migration path from the probable point of entry (PPE) to the target...
In Commercial BuildingsWithin the interior of, on the roof of, attached to the exterior wall of, in the parking area serving, or...
In Ethylene Oxide ServiceFor equipment leaks, any equipment that contains or contacts a fluid (liquid or gas) that is at least 0.1...
In Existence BuildingThat the owner or operator has obtained all necessary preconstruction approvals or permits required by...
In GrossA traditional property law term used to describe easements that provide a benefit not related to any property...
In Home DisplayA dedicated display device designed to deliver energy-related information such as energy consumption...
In Indian CountryIndicates if the water is either wholly or partially in Indian country.
IN KIND CONTRIBUTIONThe value of a non cash contribution to meet a recipient's cost sharing requirements. An in kind contribution...
In lieu of paper1. When an electronic report takes the place of a paper report submitted to satisfy the requirements under...
In OperationEngaged in activity related to the primary design function of the source.
In Service EquipmentEquipment classified in the CFR by its use/exposure.
In silicoA general term used to mean "performed on computer or via computer simulation."
In Situ1. The term in situ, "in its original place," or "on-site", means unexcavated and unmoved. In situ soil...
In Situ Biological TreatmentThe treatment of contaminated soils with an alternative technology process whereby the organic components of...
In Situ DataMeasurements made at the actual location of the object or material measured, in contrast to remote sensing.
In Situ Hybridization1. A technique that localizes specific nucleic acid sequences within intact chromosomes, eukaryotic cells, or...
In Situ Physical/Chemical TreatmentThis treatment uses the physical properties of the contaminants or the contaminated medium to destroy (i.e...
In Situ Treatment TechnologyThe term in situ, "in its original place," or "on-site", means unexcavated and unmoved. In situ soil flushing...
In Stream StructureUsed in restoration design to provide channel stability and promote certain habitat types. In-stream...
In Vitro1. In glass; a laboratory experiment performed in a test tube or other vessel.
In Vitro StudiesStudies of chemical effects conducted in tissues, cells or subcellular extracts from an organism (I e , not...
In Vivo1. Within a living organism; a laboratory experiment performed in which the substance under study is inserted...
In Vivo StudiesStudies of chemical effects conducted in intact living organisms.
Inability to Access RecordIncapacity of any person to maintain, furnish or permit access to any records under this Act and regulations...
Inactivated VaccineVaccine made from viruses and bacteria that have been killed through physical or chemical processes. These...
Inactivation Control1. Any combination of mechanical, procedural, or biological controls designed and operated to restrict...
Inactive CCR Surface ImpoundmentCCR surface impoundment that no longer receives CCR on or after October 19, 2015 and still contains both CCR...
Inactive Military RangeMilitary range that is not currently being used, but that is still under military control and considered by...
Inactive MineMines where extraction activities are not currently taking place.
Inactive PortionPortion of a facility which is not operated after the effective date of part 261 of this chapter. (See also...
Inactive Waste FacilityA facility which no longer received solid waste.
Inactive Waste Facility PortionThat portion of a facility which is not operated after the effective date of part 261 of this chapter. (See...
Inadequate Information to Assess Carcinogenic PotentialThis descriptor is appropriate when available data are judged inadequate for applying one of the other...
Inadvertent Contamination EventThe unplanned, unintentional, introduction into water, air, and soil of microorganisms, chemicals, toxic...
Inadvertent DisasterAn unpremeditated, unplanned, unexpected occurrance inflicting widespread destruction and distress and having...
inadvertent return1. An occurrence of drilling fluids escaping from the ground at an unexpected place during horizontal...
Inappropriate InfluenceThe attempt to shape or interfere in scientific activities or the communication about or use of scientific...
InattentionPerson wanders off task, lacks persistence, has difficulty sustaining focus, and is disorganized; and these...
Inboard EngineSpark-ignition engine that is used to propel a vessel, but is not an outboard engine or a personal watercraft...
Inboard Marine EngineFour stroke marine SI engine that is designed such that the propeller shaft penetrates the hull of the marine...
Inborn Genetic DiseasesDiseases that are caused by genetic mutations present during embryo or fetal development, although they may...
InbreedingMating among related individuals.
Inbreeding DepressionThe deterioration in a population's fitness and other traits due to a reduction in genetic diversity within...
Incandescent light bulbThe most common type of light bulb, which produces light when electricity heats a thin metal wire...
Incapacitating AgentDrug that makes people unable to think clearly or that cause an altered state of consciousness (possibly...
IncarcerationIncarceration refers to “jail time” for an individual defendant.
Incentives / InnovationsImplementation of programs or policies that indirectly protect human health and the environment through...
InceptisolsThe central concept of Inceptisols is that of soils that are of cool to very warm, humid and subhumid regions...
InChl1. InChI codes are an XML-based text coding system for chemical structures developed as a collaboration...
Incidence1. The number of new cases of a disease that develop within a specified population over a specified period of...
Incidence of TumorsPercentage of animals with tumors.
Incidence Rate1. The ratio of new cases within a population to the total population at risk given a specified period of...
Incidence-Based CostThe total lifetime costs of new cases of a disease or injury that occur during a certain period of time...
incidence-based costsThe total lifetime costs of new cases of a disease or injury that occur during a certain period of time.
Incident1. Work-related event(s) in which an injury or ill health (regardless of severity) or fatality occurred, or...
Incident Command PostA facility located at a safe distance from an emergency site, where the incident commander, key staff, and...
Incident Command SystemThe organizational arrangement wherein one person, normally the Fire Chief of the impacted district, is in...
Incident LightLight that shines onto the face of a solar cell or module. .
Incident ManagementThe broad spectrum of activities and organizations providing effective and efficient operations...
Incident Management Assistance TeamAn interagency national- or regional-based team composed of subject-matter experts and incident management...
Incident Management TeamAn Incident Commander and the appropriate Command and General Staff personnel assigned to an incident. IMTs...
Incident ObjectiveStatements of guidance and direction needed to select appropriate strategy(s) and the tactical direction of...
Incidental NanoparticleNanoparticles produced by human activities not intended to make nanoparticles
Incidental Nanosized MaterialNanomaterials that are the byproducts of human activity, such as combustion, welding, or grinding.
Incidental ParasiteAn accidental parasite.
Incidental TakeThe number of animals that are harmed or killed as a result of pesticide application.
Incidental WetlandWetland that was created as a result of previous development or human activity
Incidental Wood Furniture ManufacturerMajor source that is primarily engaged in the manufacture of products other than wood furniture or wood...
Incineration1. The destruction of solid, liquid, or gaseous wastes by controlled burning at high temperatures. Hazardous...
Incineration at SeaDisposal of waste by burning at sea on specially-designed incinerator ships.
Incinerator1. A furnace for the routine burning of waste materials using controlled flame combustion.
Incinerator Operating Combustion TemperatureArithmetic mean of the temperature readings in the hottest zone of the furnace recorded in a day (24 hours)...
Incinerator Primary ChamberChamber in an HMIWI that receives waste material, in which the waste is ignited, and from which ash is...
Incipient DecayThe early stage of decay in which degradation has not proceeded far enough to soften the wood or to cause a...
Incipient FireFlame that is still in its beginning stage, characteristically small and not widespread, visible through...
incisedA channel that has been cut relatively deep into underlying formation by natural or human-induced processes.
IncisionThe downward cutting of a stream into the earth's surface.
Inclined GrateA type of furnace in which fuel enters at the top part of a grate in a continuous ribbon, passes over the...
Inclining-Block RatePricing structure for which the dollar amount charged per unit of water (such as dollars per gallon)...
Include in MeasureEPA can determine whether the Action should count towards 303(d) measures. Draft Actions get partial credit...
Inclusion Probability1. The probability that a stream segment or other sampling unit is selected for inclusion in a dataset.
Income EffectThe income effect is a consumer’s reaction with respect to purchases of a commodity to changes in their...
Incompatible Hazardous WasteHazardous waste which is unsuitable for:(1) Placement in a particular device or facility because it may cause...
Incompatible Land UseLand uses which cannot exist together by reason of either competition for limited resources or use byproducts...
Incompatible Waste1. A waste unsuitable for mixing with another waste or material because of reactivity hazards.
Incomplete CombustionFuel from the firewood that does not burn.
Incomplete Combustion ProductOrganic compound formed by combustion. Usually generated in small amounts and sometimes toxic, PICs are...
Incomplete ProteinsProteins which do not supply all the essential amino acids.
Incomplete TruckAny truck which does not have the primary load carrying device or container attached.
Incomplete Vehicle1. Vehicle meeting the definition of incomplete vehicle in 40 CFR 1037.801 when it is first sold as a vehicle.
Incorporation by ReferenceThis occurs when the regulatory language in a state's regulation actually cite, or refer to, the federal...
Increasing-Block (or Inclining-Block) RateA pricing structure for which the dollar amount charged per unit of water (such as dollars per gallon)...
Increasing-Block RatePricing structure for which the dollar amount charged per unit of water (such as dollars per gallon)...
Incremental Compliance Progress1. Steps toward compliance which will be taken by a specific source, including:(1) Date of submittal of the...
Incremental Cost1. The additional cost associated with adding an increment of capacity.
Incremental Electrical Energy CostThe cost of producing and/or transporting the next available unit of electrical energy above a previously...
Incremental RiskThe probability of injury, disease, or death under specific circumstances, relative to the background...
Incurred Compound1. A compound that is present in a sample without addition by the laboratory. The compound may be essentially...
Indemnification1. A risk allocation tool used in property transactions which typically involves an agreement that provides...
IndemnifyTo restore the victim of a loss, in whole or in part, by payment, repair, or replacement.
IndemnityIn general, means the reimbursement for a loss, but also can be used to mean a benefit provided by a policy.
Indentation Force DeflectionMeasure of the load bearing capacity of flexible polyurethane foam. IFD is generally measured as the force...
IndependenceThe result in one animal or individual does not influence the result in another animal or individual.
independent actionThe mean probability of infection per inoculated microorganism is independent of the number of organisms in...
Independent AssessmentAn assessment performed by a qualified individual, group, or organization that is not a part of the...
Independent AuditAudit performed by an independent certified public accountant in accordance with generally accepted auditing...
Independent AuditorProfessional engineer who is not an employee or agent of the source being audited.
Independent Calibration Verification1. An analytical standard used to verify calibration prior to analysis of samples. The ICV is obtained from a...
Independent Commercial Importer1. A commercial importer of non-conforming vehicles who is not an original equipment manufacturer (OEM) and...
Independent EvaluationAn evaluation in which the evaluator has the primary responsibility for developing the evaluation plan...
Independent Power Producer1. Any facility subject to the requirements of this subpart that is in operation on October 19, 2015. An...
Independent Power Production FacilityA source that:(1) Is nonrecourse project financed, as defined by the Secretary of Energy at 10 CFR part...
Independent Printed Circuit Board ManufacturerFacility which manufacturers printed circuit boards principally for sale to other companies.
Independent SurveyorAny person who meets the independence requirements in § 1090.55 and conducts a survey under subpart O of this...
Independent Testing LaboratoryTest facility operated independently of any motor vehicle, motor vehicle engine, or retrofit device...
Independent Third-Party AuditorParty meeting the requirements of § 80.1471(b) that conducts QAP audits and verifies RINs, biointermediates...
Independent Variable1. A variable that may, it is believed, predict or cause fluctuation in a dependent variable.
InDesignthe professional design/layout program which has become the industry standard in print publishing.
Indeterminate GrowthPlant growth that continues at the apex, or tip, such as the continued flower development in indeterminate...
Indeterminate Growth ProcessPlant growth that continues at the apex, or tip, such as the continued flower development in indeterminate...
Index1. A set of related measures combined to characterize a more abstract concept.
Index ChemicalA chemical used as the point of reference for standardizing the common toxicity of the chemical members of...
Index of Biological Integrity1. An integrative expression of site condition across multiple metrics. An index of biological integrity is...
Index of Biotic Integrity1. The IBI uses measurements of the distribution and abundance or absence of several fish species types in...
Index of DispersionA measure of spread; a statistic used especially with nominal variables.
Index Period1. The time period within a year selected for measurement (ecologically based). Measurements may be taken...
Index sample1. A standardized judgment sample for which explicit rules for generating the index measure are formally...
Indexed JournalJournals that deposit articles in the PubMed Central database.
Indexed JournalsJournals that deposit articles in PMC.
Indian Country1. Defined at 40 Code of Federal Regulations (CFR) 122.2 to mean: 1.) All land within the limits of any...
Indian Governing Body1. Governing body of any tribe, band, or group of Indians subject to the jurisdiction of the U.S. and...
Indian Land1. All land within the limits of any Indian reservation under the jurisdiction of the United States...
Indian LandsAny land defined (Indian Lands/Indian Country, Indian Reservation, Trust Lands, Tribal Lands, Fee patent, Fee...
Indian Lands / Indian CountryTitle 18, U.S. Code, section 1151, identifies three areas as Indian country. 1. All lands within the...
Indian Reservation1. An Indian reservation is an area of land "reserved" for Indian use, usually under the terms of a formal...
Indian Tribe1. Any Indian Tribe having a Federally recognized governing body carrying out substantial governmental duties...
Indian Tribe ConsortiumGroup of two or more Indian tribes.
Indicator1. A measurable feature that singly or in combination provides manageable and scientifically useful evidence...
Indicator BacteriaSpecies of bacteria that occur only in areas with a particular set of environmental conditions, so that...
Indicator (chemical)A substance that gives a visible change, usually of color, at a desired point in a chemical reaction...
Indicator CompoundsChemical compounds, such as carbon dioxide, whose presence at certain concentrations may be used to estimate...
Indicator developmentThe process through which an indicator is identified, tested, and implemented. A candidate indicator is...
Indicator ElementThe building block of the RSEI model. A unique combination of facility, chemical release, year, release...
Indicator (instrument)A device which indicates the result of a measurement. Most indicators in the water utility field use either a...
Indicator Plant SpeciesA plant species that has a sufficiently consistent association with some environmental condition (ecosystem)...
Indicator Substance1. In chemistry, a substance that shows a visible change, usually of color, at a desired point in a chemical...
indigenousLiving or occurring naturally in a specific area or environment; native.
Indigenous Peoples1. The term “indigenous peoples” includes state-recognized tribes; indigenous and tribal community-based...
Indigenous Plant1. (Plant) species that are native or naturally belonging to a particular geographic area or environment.
Indigenous PopulationPeople native to a particular area.
Indigenous speciesA species that is native to the Chesapeake Bay region. It evolved on the North American continent and was...
Indirect Ammonia Recovery SystemThose systems that recover ammonium hydroxide as a by-product from coke oven gases and waste ammonia liquors.
Indirect BenefitResults that are related to a program, but not its intended objectives or goals.
Indirect Causation1. The induction of effects through a series of cause-effect relationships, such that the impaired biological...
Indirect Cause1. A cause that acts by inducing an effect that, through one or more further cause-effect relationships...
Indirect ChargesThose costs incurred for a common or joint purpose benefitting more than one cost objective, and not readily...
Indirect CompetitionThe exploitation of a resource by one individual that reduces the availability of that resource to others...
Indirect ConsequenceEffect that is not a direct consequence of an event, incident, or occurrence, but is caused by a direct...
Indirect Contact TransmissionSituations where a susceptible person is infected from contact with a contaminated surface or fomite...
Indirect Cost1. The resources forgone either to participate in an intervention or as the result of a health condition...
INDIRECT COST RATEThe ratio, expressed as a percentage, of an organization's total indirect costs to its direct cost base...
INDIRECT COST RATE AGREEMENTAn agreement between the recipient and the cognizant Federal agency which identities the basis for the...
INDIRECT COST RATE PROPOSALThe documentation prepared by a governmental unit or component thereof to substantiate its request for the...
Indirect Costs1. The costs associated with impacts or consequences of a program.
Indirect Discharge1. The introduction of pollutants from a non-domestic source into a publicly owned wastewater treatment...
Indirect Discharger1. A nondomestic discharger introducing pollutants to a publicly owned treatment works.
Indirect DischargesWastewater that is first sent to a POTW, and then after treatment by the POTW, discharged pursuant to a NPDES...
Indirect DriverA driver that operates by altering the level or rate of change of one or more direct drivers.
Indirect Effect1. An effect where the stressor acts on supporting components of the ecosystem, which in turn have an effect...
Indirect EffectsIndirect impacts are "caused by the action and are later in time or farther removed in distance, but are...
Indirect Emission1. Indirect emissions from a building, home or business are those emissions of greenhouse gases that occur as...
Indirect Emissions1. Indirect emissions from a building, home or business are those emissions of greenhouse gases that occur as...
indirect exposureOften defined as an exposure involving multimedia transport of agents from source to exposed individual...
Indirect ImpactAn effect of a program that is not associated with one of its stated objectives.
Indirect Information1. Any information that is not specifically contained in the service literature, but is contained in items...
Indirect LossLoss resulting from a peril but not caused directly and immediately thereby. For example, loss of property...
Indirect Measurement MethodMethod of measurement in which the quantity desired is determined through measurement of a related quantity...
Indirect preparationA method whereby a filter with too much material undergoes a separation step to allow for analysis.
Indirect SourceAny facility or building, property, road or parking area that attracts motor vehicle traffic and, indirectly...
Indirect Thermal DryerThermal dryer that reduces the moisture content of coal through indirect heating of the coal through contact...
Indirect TransmissionTransmission of an agent carried from a reservoir to a susceptible host by suspended air particles or by...
Indirect Use ValueValue placed on a thing, that while it might not be used, we use something that depends on it.
Indirect water ingestionIncludes water added during food preparation, but not water intrinsic to purchased foods. Indirect water...
Individual1. A natural person, not a corporation or other legal entity nor an association of persons.
Individual Control StrategyDefined at 40 CFR 123.46(c).
Individual Drain System1. All process drains connected to the first common downstream junction box. The term includes all such...
Individual Exposure or Risk AssessmentA process that evaluates the likelihood of an adverse impact on human health (risk), or amount of exposure...
Individual Generation SiteContiguous site at or on which one or more hazardous wastes are generated. An individual generation site...
Individual permitAuthorizations issued directly to an applicant.
Individual Proficiency ExamExam which evaluates individuals who provide radon measurement services in a residential environment.
Individual RecipeSpecific combination of gases, under specific conditions of reactor temperature, pressure, flow, radio...
Individual Risk1. The probability that an individual will experience an adverse effect.
Individual ShipmentKilograms of a regulated substance for which a person may make one (1) U.S. Customs entry, as identified in...
Individual Shipment Amount1. Kilograms of a controlled substance for which a person may make one (1) U.S. Customs entry, as identified...
Individual SubmissionThe process that individual authors or researchers use to deposit manuscripts in NIHMS.
individual susceptibilityThe marked variability in the manner in which individuals will respond to a given exposure to a toxic agent...
Individual SystemPrivately owned alternative wastewater treatment works (including dual waterless/ gray water systems) serving...
Individual with History of Mental or Physical ImpairmentHas a history of, or has been misclassified as having, a mental or physical impairment that substantially...
IndoorThe air inside of a building or enclosed structure (e.g. home, school, office, or other building environment)...
Indoor Air1. Breathing air inside a habitable structure, often highly polluted because of lack of exchange with fresh...
Indoor Air CleaningIndoor-air quality-control strategy to remove various airborne particulates and/or gases from the air. Most...
Indoor Air Particulate Matter ControlControl of the complex mixture of solid and/or liquid particles suspended in the air of indoor environments...
Indoor Air Pollutant1. Particles and dust, fibers, mists, bioaerosols, and gases or vapors.
Indoor Air Pollution1. Chemical, physical, or biological contaminants in indoor air.
Indoor Air Quality1. The healthiness of the air inside homes. Indoor air pollution sources that release gases or particles into...
Indoor Airborne MoldMold spores found in the air in all types of buildings and enclosures
Indoor Climate1. Temperature, humidity, lighting, air flow and noise levels in a habitable structure or conveyance. Indoor...
Indoor DecontaminationRemoval of harmful substances such as noxious chemicals, harmful bacteria or other organisms, or radioactive...
Indoor DustTiny particles found in the indoor environment produced by multiple sources, including the breakdown of plant...
Indoor EnvironmentTechnology and activities related to items inside buildings and other structures. This includes furnishings...
Indoor Gas EmissionGases emitted indoors include combustion gases from cooking and heating as well as environmental tobacco...
indoor ozone systemsA controversial indoor technique that uses ozone for broiler house cleaning and in-house air contaminant...
Indoor Radon Abatement ActTo amend the Toxic Substances Control Act to assist States in responding to the threat to human health posed...
Indoor (secondary flow context)Describes the indoor or outdoor context of an air flow.
Indoor settled dustParticles in building interiors that have settled onto objects, surfaces, floors, and carpeting. These...
Indoor SourceObjects or places within buildings or other enclosed spaces that emit air pollutants.
In-Drain Treatment TechnologyInserts placed in floor or area drains to treat waters entering the drain for contaminant removal.
Induced magnetizationMagnetization caused by an applied magnetic field. Contrast with remanent magnetization.
Induced polarizationA geophysical effect whereby electrical ge is momentarily polarized within a material, usually a disseminated...
Induced SeismicityEarthquake activity resulting from human activity that causes a rate of energy release, or seismicity, which...
Inducible Nitric Oxide SynthaseInduced by lipopolysaccharide, endotoxins, and cytokines and expressed as 2 alternative isoforms in liver...
InductionProcess, described by Faraday's Law, whereby a variable magnetic field generates an electric field (voltage)...
Induction (EM), induceThe process, described by Faraday's Law, whereby a variable magnetic field generates an electric field...
Induction FurnaceElectrical furnace where the heat is generated by inducing it in the metal.
Induction GeneratorAsynchronous AC motor which can be used as a generator
Induction log1. A method for measuring resistivity or conductivity that uses an electromagnetic technique to induce a flow...
Induction LoggingType of well logging in which induced eddy currents are measured to determine conductivity of the formation...
Induction MotorA motor in which a three phase (or any multiphase) alternating current (i.e. the working current) is supplied...
Induction numberA quantitative measure of the quality of a target for EM methods. The formulation varies for different...
Inductive InferenceInference from observations to general principles. Compare to abductive inference and deductive inference.
Inductively Coupled Plasma-Atomic Emission SpectroscopyVariation of atomic emission spectroscopy in which the material to be analyzed is dissociated by means of an...
Inductivity Coupled Plasma Mass SpectrometryMass spectrometry of plasma that is produced using a torch and a radio frequency (RF) generator, wherein...
Indurating FurnaceFurnace where unfired taconite pellets, called green balls, are hardened at high temperatures to produce...
IndustrialOccupation of land characterized by industrial infrastructure [Original source: (US Geological Survey et...
Industrial Air PollutionThis term refers to the emissions of the following pollutants: sulfur oxides, nitrogen oxides, mercury, and...
Industrial BoilerA boiler used in manufacturing, processing, mining, and refining or any other industry to provide steam, hot...
Industrial BuildingBuilding directly used in manufacturing or technically productive enterprises. Industrial buildings are not...
Industrial Chemical FunctionIntended physical or chemical characteristic for which a chemical substance or mixture is consumed as a...
Industrial Coatings ProcessSurface coating is the application of decorative or protective materials in liquid or powder form to...
Industrial Cooling TowerAny cooling tower used to remove heat from industrial processes, chemical reactions, or plants producing...
Industrial CropThose crops that are not specifically grown for foodstuffs (such as fruit crops, vegetable crops and grain...
Industrial DischargerAny source of nondomestic pollutants regulated under section 307(b) or (c) of the Clean Water Act which...
Industrial DrumCylindrical containers used for shipping and storing liquid or solid materials.
Industrial Dryer1. Unit in which the moisture content of phosphate rock is reduced by contact with a heated gas stream.
Industrial DustSolid particles generated by any mechanical processing of materials including crushing, grinding, rapid...
Industrial End-Use SectorComprises manufacturing industries, which make up the largest part of the sector, along with mining...
Industrial Energy CustomerIndustrial energy customers include businesses involved in manufacturing or industrial processing.
Industrial FacilityPlaces provided for the processing, fabrication, assembly, and production of a line of products, services...
Industrial Furnace1. An enclosed unit that is an integral part of a manufacturing process and uses thermal treatment to recover...
Industrial Furnace by UseFurnaces grouped according to their function or purpose
Industrial Greenhouse GasNitrous oxide or any fluorinated greenhouse gas.
Industrial LandIndustrial areas include a wide array of land uses from light manufacturing to heavy manufacturing plants...
Industrial LaunderersThis U.S. industry comprises establishments primarily engaged in supplying, on a rental or contract basis...
Industrial Maintenance CoatingHigh performance architectural coating, including primers, sealers, undercoaters, intermediate coats, and...
Industrial MicroorganismMicroorganisms used in the large scale production of products useful to humans
Industrial Mineral1. Rocks, minerals, or other naturally occurring inorganic substances of economic value that are not metallic...
Industrial Non-Hazardous WasteWaste generated from processes associated with the production of goods and products, such as electric power...
Industrial Operation-Associated Landfill1. A landfill located on the same site as industrial or commercial operations
Industrial OrganizationAny company, corporation, association, partnership, firm, university, not-for-profit organization, or...
Industrial Pollution PreventionCombination of industrial source reduction and toxic chemical use substitution.
Industrial POTWPOTW that accepts a waste stream regulated by an industrial NESHAP and provides treatment and controls as an...
Industrial ProcessManufacturing Operations
Industrial Process ChemicalUses of chemicals commonly used in manufacturing or extraction processes
Industrial Process Cooling TowerAny cooling tower that is used to remove heat that is produced as an input or output of a chemical or...
Industrial Process Refrigeration1. For the purposes of § 82.156(i), complex customized appliances used in the chemical, pharmaceutical...
Industrial Process Shutdown1. For the purposes of § 82.156(i), that an industrial process or facility temporarily ceases to operate or...
Industrial Process Waste1. Residues produced during manufacturing operations.
Industrial ProjectA project that includes structures designed for industrial purposes including, producing, processing, or...
Industrial RevolutionA period of rapid industrial growth with far-reaching social and economic consequences, beginning in England...
Industrial Sand and GravelOften called "silica," "silica sand," and "quartz sand," includes sands and gravels with high silicon dioxide...
Industrial Sludge1. Semi-liquid residue or slurry remaining from treatment of industrial water and wastewater.
Industrial Solid Waste1. Solid waste generated by industrial processes and manufacturing. [40 CFR 243.101 (CFR 2013)]
Industrial Source1. Non-municipal, or industrial source, often generates wastewater that is discharged to surface waters. The...
Industrial Source EmissionA term used in this report to describe air emissions sources of industrial origin. The report breaks...
Industrial Source ReductionPractices that reduce the amount of any hazardous substance, pollutant, or contaminant entering any waste...
Industrial Spark-Ignition EngineLand-based spark-ignition engines over 19kV
Industrial Storm Water DischargeDefined at § 122.26(b)(14).
Industrial StormwaterPermit requirements associated with non-construction activities at industrial facilities, as defined at 40...
Industrial Stormwater PermitPermit requirements associated with non-construction activities at industrial facilities, as defined at 40...
Industrial SystemA collection of operations that together perform some defined function.
Industrial Use1. Use for, or in, a manufacturing, mining, or chemical process or use in the operation of factories...
Industrial Use SectorA user community that uses an ozone-depleting substance in similar ways. SNAP reviews substitutes in nine...
Industrial User1. A source of indirect discharge that does not constitute "discharge of pollutants" under regulations issued...
Industrial Waste1. Unwanted materials produced in or eliminated from an industrial operation and categorized under a variety...
Industrial Waste DamAn embankment dam, usually built in stages, to create storage for the disposal of waste products from an...
Industrial Waste LandfillAny landfill other than a municipal solid waste landfill, a RCRA Subtitle C hazardous waste landfill, or a...
Industrial Wastewater1. Wastewater generated in a commercial or industrial process.
Industrial Wastewater DischargeWastewater discharges from industrial sources to surface waters and publicly owned treatment works (sometimes...
Industrial Wastewater Treatment SludgeMaterial produced by a treatment plant that processes municipal or industrial waste waters.
Industrial Water UseWater used for industrial purposes in such industries as steel, chemical, paper, and petroleum refining...
Industrial/Commercial/Governmental User SectorInvolves pesticides applied by professional applicators (by owner/operators/employees and custom/commercial...
Industry Collaboration InitiativeNon-mandatory collaboration sponsored by an industry or manufacturing group to accomplish a goal
Industry process waterWater produced during industrial and manufacturing processes. Other terms referring to this source of water...
Inert Ingredient1. Pesticide components such as solvents, carriers, dispersants, and surfactants that are not active against...
Inert Ingredients1. Substances that are not "active," such as water, petroleum distillates, talc, corn meal, or soaps. When...
Inert Pesticide IngredientSubstances that are not an active ingredient (http://www.alanwood.net/pesticides/glossary.html#active) and...
Inertia Weight Class1. Class, which is a group of test weights, into which a vehicle is grouped based on its loaded vehicle...
Inertial CurrentCurrents that continue motion through inertia. Due to the rotation of the Earth, inertial currents tend to...
Inertial SeparatorA device that uses centrifugal force to separate waste particles.
InfaunaAnimals and bacteria of any size that live in bottom sediments. Worms and clams are considered infauna. They...
infection1. Attachment and growth of pathogenic microorganisms, including bacteria, protozoans, viruses, and...
Infectious Agent1. Any organism, such as a pathogenic virus, parasite, or bacterium, that is capable of invading body...
Infectious Bovine RhinotracheitisA herpesvirus infection of cattle characterized by inflammation and necrosis of the mucous membranes of the...
Infectious Canine HepatitisA contagious disease caused by canine adenovirus infecting the liver, the eye, the kidney, and other organs...
Infectious diseaseA disease caused by bacteria, a virus, or other organisms.
Infectious Disease Containment MeasureAction taken to reduce the transmission of disease
Infectious DisordersDisorders resulting from the presence and activity of a microbial, viral or parasitic agent. It can be...
infectious doseThe number of organisms that make individuals ill or carriers. In reality, there is a probability...
infectious pathogenOne of three broad classes of foodborne pathogens - infectious, toxico-infectious or toxigenic - based on...
Infectious Waste1. Hazardous waste capable of causing infections in humans, including: contaminated animal waste; human blood...
infective dosexThis term applies to the dose that will cause infection in x% of the population receiving the dose (e.g...
Infectivity1. The proportion of persons exposed to a causative agent who become infected by an infectious disease.
InferenceThe act of reasoning from evidence.
Inferential LogicA process for reasoning from the evidence to a necessary and specific conclusion.
Inferential StatisticA statistic used to describe a population using information from observations on only a probability sample of...
InfertilityInability to conceive for at least one year after trying and having unprotected sex. Causes of female...
Infill DevelopmentInfill development is new construction on previously developed land in cities or developed suburbs. The term...
Infill SiteA site that must have at least 75 percent of its perimeter bordering sites that consist of at least 75...
Infiltration1. The flow of a fluid into a substance through pores or small openings. Commonly used to in hydrology to...
Infiltration Basin1. A shallow rock-filled trench or depression with no outlet intended to detain and then infiltrate...
Infiltration CapacityThe capacity of a soil to allow water to infiltrate into or through it during a storm.
Infiltration Gallery1. A subsurface groundwater collection system, typically shallow in depth, constructed with open-jointed or...
Infiltration ProcessPart of the water cycle. Downward entry of water into the soil or rock surface.
Infiltration Rate1. Quantity of water (usually measured in inches) that will enter a particular type of soil per unit time...
infiltration trenchA drainage facility designed to use the hydrologic process of runoff soaking into the ground, commonly...
Infiltration Water1. Water which permeates through the earth into the plant site.
Inflammation1. Swelling caused by the accumulation of lymph and blood cells at the site of infection or injury.
Inflammatory ResponseA part of innate immunity, the Inflammatory Response occurs when injured tissues induce release of...
InflationThe anticipated rate of increase in the price level of goods and services.
Inflation Index1. EPA shall make use of the Producer Price Index for Chemicals and Allied Products, as compiled by the U.S...

1,291 of 30,736 terms in Environment terminology (MLC-0121). Request the full dataset.