Environment terminology · MLC-0121
Environment terms: A (2,484)
- ArgyrosisPoisoning by silver or a silver salt, evidenced by ashen-gray discoloration of skin
- Arid EcosystemTerrestrial systems characterized by a climate regime where the potential evapotranspiration exceeds...
- Arid ecosystemsTerrestrial systems characterized by a climate regime where the potential evapotranspiration exceeds...
- AridisolsAridisols, as their name implies, are soils in which water is not available to mesophytic plants for long...
- arithmetic mean1. The sum of all the measurements in a data set divided by the number of measurements in the data set.
- Arithmetic Standard DeviationStandard deviation (or arithmetic standard deviation, SD) is a common measure of the spread of a...
- Arkansas-KeystoneThe Arkansas River Basin below the Walnut River Basin to Keystone Dam, excluding the Cimarron River Basin...
- Arkansas-White-Red RegionThe drainage of the Arkansas, White, and Red River Basins above the points of highest backwater effect of the...
- ArmThe portion of the upper extremity between the shoulder and the elbow. For clinical purposes this term is...
- Armed Forces MemberMembers and veterans of the U.S. armed services.
- Armed Forces VesselVessel owned or operated by the United States Department of Defense or the United States Coast Guard, other...
- ArmillariaA genus of root and butt rot fungi in the family Tricholomataceae that produce rhizomorphs and are...
- armoring1. The placement of fixed engineering structures, typically rock or concrete, on or along the shoreline to...
- armoring (shoreline hardening)The installation of artificial shoreline structures designed to prevent erosion and protect properties from...
- Armour RockStone resulting from blasting, cutting, or other methods to obtain pieces heavy enough (generally 1 to 3...
- aromatic1. Organic compounds that are unsaturated and contain at least one 6-carbon benzene ring.
- Aromatic Amino AcidsAmino acids containing an aromatic side chain.
- Aromatic Halogenated OrganicsOrganic chemicals containing at least one aromatic ring and halogen atom.
- Aromatic HydrocarbonsOrganic compounds containing carbon and hydrogen in the form of an unsaturated, usually hexagonal ring...
- Aromatics1. Aromatics are organic compounds that contain 6-carbon ring structures, such as creosote, toluene, and...
- ARRANGEMENTIn files management, the act or result of placing records in a particular order or sequence. See also...
- ArrayAn arrangement of sensing elements in repeating or non-repeating units that are arranged for increased...
- Array CurrentThe electrical current produced by a photovoltaic array when it is exposed to sunlight.
- Arrayed Library1. Individual primary recombinant clones (hosted in phage, cosmid, YAC, or other vector) that are placed in...
- ArrestRestraint of an arrestee's liberty or the equivalent through the service of judicial process compelling such...
- ArrestanceThe ability of a filter to remove injected standard dust from the test air.
- ArrhythmiaAny variation from the normal rhythm of the heart beat
- ArroyoWatercourse or channel through which water may occasionally flow.
- Arsenic1. Arsenic is a highly poisonous semi-metallic element. According to a 1999 study by the National Academy of...
- Arsenic and Arsenic Compounds1. Inorganic or organic compounds that contain arsenic.
- Arsenic Compounds (inorganic compounds: 0.1; organic compounds: 1.0)Includes any unique chemical substance that contains arsenic as part of that chemical's infrastructure.
- Arsenic ExposureExposure to arsenic and arsenic compounds.
- Arsenic Groundwater ContaminationIntroduction into groundwater of arsenic in a concentration that makes the medium unfit for its next intended...
- Arsenic MetabolismAnimal metabolism and excretion of inorganic and organic arsenic. Interference with cellular respiration...
- Arsenic Pre-Oxidation TechnologyInvolves converting inorganic AS(III) to AS(V) for removal efficiency.
- Arsenic RemovalThe primary route of exposure to arsenic for humans is ingestion. . Organic species of arsenic are...
- Arsenic Test KitInvolves a chemical reaction that converts the arsenic compounds (mostly inorganic arsenic) present in the...
- Arsenic Treatment TechnologyThere are four technology classes: Coagulation/filtration, adsorptive media, reverse osmosis, and Ion...
- Arsenicals1. Pesticides containing arsenic.
- Arsenic-Containing Waste...Health impacts are caused when arsenic contaminates drinking water supplies. It enters water supplies...
- Art FixativeClear coating, including art varnish, workable art fixative and ceramic coating, which is designed and...
- Art SealantClear coating, including art varnish, workable art fixative and ceramic coating, which is designed and...
- ArteriosclerosisHardening and thickening of the walls of the smaller arteries
- Artery1. A blood vessel that carries blood from the heart to tissues and organs in the body.
- Artesian Aquifer1. (are-TEE-zhun) Water held under pressure in porous rock or soil confined by impermeable geologic...
- Artesian WaterGround water that is under pressure when tapped by a well and is able to rise above the level at which it is...
- Artesian Well(are-TEE-zhun) Water held under pressure in porous rock or soil confined by impermeable geologic formations...
- ArthrodermataceaeA family of ascomycetous fungi, order Onygenales, characterized by smooth ascospores. Genera in the family...
- Arthropod1. A diverse group of invertebrates that have jointed legs and an exoskeleton, or external skeleton. Aquatic...
- Arthropod Body PartSpecialized body parts of arthropods
- ArthropodaAn animal phylum that contains lobsters, crabs, shrimp, mantis shrimp, barnacles and copepods, fairy shrimp...
- ArthropodsAnimals that don't have a backbone or spinal cord. Examples are insects with hard shells and spiders.
- Article1. Manufactured item, as defined under 29 CFR 1910.1200(b), that is formed to a specific shape or design...
- Article 5 AllowanceAllowances apportioned under §§ 82.9(a), 82.11(a)(2), and 82.18(a).
- Artificial InseminationPlacing semen into the female reproductive tract (usually the cervix or uterus) by means other than natural...
- Artificial Lift EquipmentMechanical pumps including, but not limited to, rod pumps and electric submersible pumps used to flowback...
- Artificial RechargeAny process where water is put back into ground-water storage from surface-water supplies such as irrigation...
- Artificial reef1. An underwater structure made of artificial substances (such as concrete or metal) that mimics oyster reefs...
- Artificial SubstrateA device that purposely is placed in a stream or lake for colonization of organisms. The artificial substrate...
- ArtworkA general term used to describe photographs, drawings, paintings, hand lettering, and the like prepared to...
- Arundo donaxGiant reed, also known as wild cane, is a tall, perennial grass that can grow to over 20 feet in height. Its...
- Aryl Hydrocarbon HydroxylaseA large group of cytochrome P-450 (heme-thiolate) monooxygenases that complex with NAD(P)H-FLAVIN...
- Aryl Hydrocarbon ReceptorCytoplasmic proteins that bind certain aryl hydrocarbons, translocate to the nucleus, and activate...
- AsbestiformFibrous minerals possessing the properties of commercial grade asbestos (e.g., flexibility, high tensile...
- Asbestos1. A mineral fiber that can pollute air or water and cause cancer or asbestosis when inhaled. EPA has banned...
- Asbestos AbatementProcedures to control fiber release from asbestos-containing materials in a building or to remove them...
- Asbestos AssessmentIn the asbestos-in-schools program, the evaluation of the physical condition and potential for damage of all...
- Asbestos Containing Building MaterialMeans surfacing asbestos-containing material (ACM), thermal system insulation ACM, or miscellaneous ACM that...
- Asbestos Containing Building Material RepairReturning damaged ACBM to an undamaged condition or to an intact state so as to prevent fiber release.
- Asbestos debris1. Pieces of ACBM that can be identified by color, texture, or composition, or dust, if the dust is...
- Asbestos Disturbance PreventionActions taken to reduce disturbance of ACBM or otherwise eliminate the reasonable likelihood of the...
- Asbestos Hazard Emergency Response ActTo amend the Toxic Substances Control Act to require the Environmental Protection Agency to promulgate...
- Asbestos Hazard Emergency Response Act of 1986In 1986, the Asbestos Hazard Emergency Response Act (AHERA) was signed into law as Title II of the Toxic...
- Asbestos ManagementProcedures taken to inspection, develop management plans, and respond to the presence of asbestos in...
- Asbestos Program ManagerA building owner or designated representative who supervises all aspects of the facility asbestos management...
- Asbestos RollboardConsists of two sheets of asbestos paper laminated together. Major applications of this product include...
- Asbestos School Hazard Abatement ActTo provide assistance to improve elementary, secondary, and postsecondary education in mathematics and...
- Asbestos School Hazard Abatement Reauthorization ActPassed in 1990; requires accreditation of personnel working on asbestos activities in schools, and public and...
- Asbestos School Hazard Detection & Control ActTo establish a program for the inspection of schools to detect the presence of hazardous asbestos materials...
- Asbestos WorkerGeneral term for Individuals who may inspect for asbestos, create removal plans, and/or actually remove the...
- Asbestos-Containing Building Material RemovalThe taking out or the stripping of substantially all ACBM from a damaged area, a functional space, or a...
- Asbestos-Containing Building Material VibrationPeriodic motion of friable ACBM which may result in the release of asbestos fibers.
- Asbestos-Containing Corrugated PaperAsbestos-containing product made of corrugated paper, which is often cemented to a flat backing, may be...
- Asbestos-containing material1. When referring to school buildings, means any materials or product which contains more than one percent...
- Asbestos-Containing ProductAny product to which asbestos is deliberately added in any concentration or which contains more than 1.0...
- Asbestos-Containing Specialty PaperAsbestos-containing product that is made of paper intended for use as filters for beverages or other fluids...
- Asbestos-Containing WasteMill tailings or any waste that contains commercial asbestos and is generated by a source covered by the...
- Asbestos-Containing Waste MaterialsMill tailings or any waste that contains commercial asbestos and is generated by a source covered by the...
- Asbestosis1. A disease associated with inhalation of asbestos fibers. The disease makes breathing progressively more...
- AscariasisInfection by nematodes of the genus Ascaris.Ingestion of infective eggs causes diarrhea and pneumonitis. Its...
- ASCIIASCII is the most common format for text files in computers and on the Internet. In an ASCII file, each...
- AscomycotaA phyllum of fungi whose members are commonly known as the sac fungi.
- As-consumed intakeIntake rate based on the weight of the food in the form that it is consumed (e.g., cooked or prepared).
- Ascorbic AcidA natural water-soluble vitamin (Vitamin C). Ascorbic acid is a potent reducing and antioxidant agent that...
- AscosporeA sexual spore formed in an ascus.
- AscusSaclike structure in which ascospores are borne.
- Aseptic(a-SEP-tick) Free from the living germs of disease, fermentation or putrefaction. Sterile.
- Aseptic CoatingCoating that must withstand high temperature steam, chemicals, or a combination of both used to sterilize...
- Asexual SporeSpore formed without the fusion of two types of cells. Asexual reproduction occurs in several ways, such as...
- As-Fired SamplingTaking of a fuel sample just prior to its introduction into the unit for combustion.
- AshThe mineral content of a product remaining after complete combustion.
- Ash Yellows(Phytoplasma infection of ash trees.) Symptoms that are characteristic of diseases caused by phytoplasmas...
- AsianA person having origins in any of the original peoples of the Far East, Southeast Asia, or the Indian...
- Asian or Pacific IslanderPerson having origins in any of the original peoples of the Far East, Southeast Asia, the Indian...
- As-IsA risk allocation tool used in property transactions that involves an express statement that the seller makes...
- AsparagineA non-essential amino acid in humans, Asparagine is a beta-amido derivative of aspartic acid and plays an...
- Aspartic AcidA non-essential amino acid in humans, Aspartic Acid has an overall negative charge and plays an important...
- Aspect, environmentalElement of an organization's activities, products, and services that can interact with the environment.
- Aspect ratioLength to width ratio of a particle or fiber.
- AspergillosisA widespread fungal infection of Caribbean soft corals. It affects six species of sea fans and sea whips. The...
- Aspergillus Ear RotAffects primarily Corn/Corn products, Peanuts/Peanut products; Secondarily Pecans, Walnuts, Almonds...
- Aspergillus flavus1. Used for rice fermentation by strains of Aspergillus flavus (aflatoxin) to cause the enzymes in the...
- Aspergillus flavus NRRL 21882Utilized as a pesticide; the fungus varient that displaces the aflatoxin-producing fungus that sometimes...
- Aspergillus niger1. Aspergillus niger is a member of the genus Aspergillus which includes a set of fungi that are generally...
- Aspergillus oryzae1. The family of products that includes miso, soy sauce, and sake also use strains of Aspergillus oryzae to...
- Aspergillus parasiticusA mold that can generate aflatoxins in stored grain
- Aspergillus sojaeA mold that is used in making soy sauce
- Aspergillus spp.1. Aspergillus is an important genus in foods with most species occurring as spoilage or biodeterioration...
- Aspergillus sydowiiThe pathogenic fungus causing an epizootic infection of sea fan corals
- Asphalt1. A dark-brown-to-black cement-like material containing bitumen as the predominant constituent. It is...
- Asphalt Batch PlantSmaller-output plant where asphalt is made in batches.
- Asphalt Cement Concrete1. ACC, commonly known as "asphalt," makes up approximately 90% of all paved surfaces in the United States...
- Asphalt Chip SealingAsphalt Chip Sealing is a paving treatment in which a thin layer of asphalt emulsion binder is applied and...
- Asphalt Coating EquipmentSaturators, coating mixers, and coaters used to apply asphalt to substrate to manufacture roofing products...
- Asphalt ConcreteLayer, or combination of layers, composed of a compacted mixture of an asphalt binder and mineral aggregate.
- Asphalt Drum PlantFacility where asphalt is made continuously.
- Asphalt Emulsion SealcoatsAn asphalt emulsion sealcoat is a paving option consisting of an aggregate of small rocks in an asphalt...
- Asphalt FluxOrganic residual material from distillation of crude oil that is generally used in asphalt roofing...
- Asphalt PreparationCalled "blowing," is the oxidation of asphalt flux, achieved by bubbling air through the heated asphalt, to...
- Asphalt ProcessingStorage and blowing of asphalt.
- Asphalt Processing FacilityPlant where the asphalt from petroleum is modified and mixed to make it suitable for use.
- Asphalt Processing OperationAny operation engaged in the preparation of asphalt flux at stand-alone asphalt processing facilities...
- Asphalt Processing PlantPlant which blows asphalt for use in the manufacture of asphalt products.
- Asphalt Roofing Manufacturing OperationCollection of equipment used to manufacture asphalt roofing products through a series of sequential process...
- Asphalt Roofing PlantPlant which produces asphalt roofing products (shingles, roll roofing, siding, or saturated felt).
- Asphalt Sand and GravelSized and broken sand and gravel mixed with asphalt in batch plants to form asphalt concrete and road...
- Asphalt Storage TankAny tank used to store asphalt at asphalt roofing plants, petroleum refineries, and asphalt processing...
- Aspiration MethodMethod whereby air for fuel combustion enters the engine (e.g., natural or turbocharged). [40 CFR 92.2 (CFR...
- Assay1. A test for a particular chemical or effect.
- AssemblageAn association of interacting populations of organisms in a given waterbody. Examples of assemblages used for...
- AssemblyCombination of the component sub-elements that comprise a single installed product. For example, an air...
- Assembly Line WorkerIndividual who participates in manufacturing items by making a single part/s and attaching it/them to the...
- Assembly PlantFactory where the various product parts are put together to make the complex product.
- Assembly/DisassemblyFitting together previously manufactured or rebuilt parts or components into a complete metal product or...
- Assent of ChildChild’s affirmative agreement to participate in research. Mere failure to object should not, absent...
- AssessedA property is assessed for the presence or potential presence of environmental contamination, often referred...
- Assessed (305b)Under Section 305(b) of the CWA, the states, territories, and other jurisdictions of the United States are...
- Assessed Waters1. Assessed Waters are waters that have been monitored by states, territories, and tribes for their physical...
- Assessment1. The evaluation process used to measure the performance or effectiveness of a system and its elements.
- Assessment BasisCode representing the basis for an Assessment; is it based on monitored data, extrapolated data, or both.
- Assessment DateDay on which an Assessment was completed.
- Assessment Endpoint1. An explicit expression of the environmental value that is to be protected, operationally defined by an...
- assessment factor1. Considerations recommended by EPA for evaluating the quality and relevance of scientific and technical...
- Assessment FactorsConsiderations recommended by EPA for evaluating the quality and relevance of scientific and technical...
- Assessment Formation Union1. A mappable volume of rock within the total petroleum system that encompasses fields (discovered and...
- Assessment MethodsThe code and name of the Assessment Method used.
- Assessment MetricsStructure within which an item or procedure can be evaluated.
- Assessment Parameter AgencyDenotes the Agency (i.e. State, EPA, or Tribe) associated with an Assessment.
- assessment questionsThe questions asked during the planning/scoping phase of the risk assessment process to determine what the...
- Assessment System for Population Exposure NationwideA computer model that uses dispersion and mapping to estimate toxic air pollutant concentrations. Learn more...
- Assessment Tools for the Evaluation of RiskThe Assessment Tools for the Evaluation of Risk (ASTER) was developed by EPA's Office of Research and...
- Assessment TypeCode representing the type of Assessment that was performed (e.g., Biological, Habitat, Toxicological, etc.).
- Assessment unitAn assessment unit (AU) is a segment of a waterbody that was been evaluated for pollution.
- Assessment Unit ID (Name)A unique identifier assigned to an Assessment Unit by the Organization, and the corresponding name that will...
- Assessment Unit StatusThe current condition or status of an Assessment Unit.
- Assessment Use AgencyDenotes the Agency (i.e. State, EPA, or Tribe) associated with an Assessment.
- Assessment Waterbody UnitSegment of a waterbody that has been evaluated for pollution.
- Asset1. A component of a facility with an independent physical and functional identity and age (e.g., pump, motor...
- Asset & Liability ManagementAsset and Liability Management provides accounting support for the management of assets and liabilities of...
- Asset CategoryWhere the asset best fits within your system (e.g., source water, distribution or collection), for...
- Asset InventoryA list of assets with details about each (installation date, original cost, condition and such). Also known...
- Asset ManagementA process for maintaining a desired level of customer service at the best appropriate cost.
- Asset NameThe name of the technology or equipment that is used for your system to properly function (for example, "5th...
- Asset StatusThis is how your utility views an asset. Assets can be active (most assets), not in use or a future...
- Asset TypeThe asset's functional purpose for a specific asset category (for example, intake structure, pumping station...
- Assigned Renewable Identification NumberRIN assigned to a volume of renewable fuel or RNG pursuant to § 80.1426(e) or § 80.125(c), respectively, with...
- AssimilationThe ability of a body of water to purify itself of pollutants.
- Assimilative Capacity1. The ability of a natural body of water to receive wastewaters or toxic materials without harmful effects...
- Assimilatory Nitrate ReductionA fundamental biological process where nitrate is reduced to nitrite, converted into ammonia, and when moved...
- Assist AirAll air that intentionally is introduced prior to or at a flare tip through nozzles or other hardware...
- Assist SteamAll steam that intentionally is introduced prior to or at a flare tip through nozzles or other hardware...
- Assistance Agreement1. A legal instrument used by the U.S. Government (e.g., EPA) to transfer money, property, services, or...
- Assistant Attorney General1. Head of the Civil Rights Division, U.S. Department of Justice.
- Assisted MigrationThe intentional movement of individuals into areas assumed to be their future habitats.
- Assistive TechnologyAny item, piece of equipment, or system, whether acquired commercially, modified, or customized, that is...
- Associated Action AgencyDenotes the Agency that is establishing/issuing the Action (i.e. State, EPA, or Tribe) associated with an...
- Associated Action ID (Name)Unique Identifier for the Action associated with an Assessment that will be used to track the Action entered...
- Associated Action StatusStatus of the Action (i.e. Draft, Submitted, Final, etc.) associated with an Assessment.
- Associated Action TypeIdentifies the type of Action (TMDL, 4B, Alternative, Protection Plan, etc.) associated with an Assessment.
- Associated AssetAssets that are directly related to a primary asset's function.
- Associated Containment StructuresAs used in HRS Table 3 - 2, constructed barriers (e.g., liners, dikes, berms) that may have been placed...
- Associated EquipmentAs used in this subpart and as referred to in section 112(n)(4) of the Act, means equipment associated with...
- Associated Gas1. Natural gas that occurs in an oil field, either as a free gas cap or in solution; synonymous with gas in...
- Associated LocationA location that complements an associated asset.
- Associated/Dissolved GasNatural gas that occurs in an oil field, either as a free gas cap or in solution; synonymous with gas in oil...
- Association1. General term for the relationship among variables.
- ASSOCIATION FOR INFORMATION AND IMAGE MANAGEMENTA trade and professional organization concentrating on applications of micrographic, optical, and computer...
- Association of Boards of Certification1. An international organization representing over 150 boards which certify the operators of waterworks and...
- Association ruleA rule that unambiguously links a single resource sampling unit with a grid point. Several association rules...
- Association (Statistics)Statistical relationship between two or more events, characteristics, or other variables. [CDC 2005]
- Associationist Causation1. A cause and effect must be associated in space and time. If association does not occur, given allowance...
- AssociationsRelationships between different types of observations; these relationships become lines of evidence...
- Assumed LiabilityLiability that would not rest upon a person except that he has accepted responsibility by contract...
- Assumption, Retention, and Releases ProvisionsA risk allocation tool used in property transactions wherein the buyer accepts or seller retains...
- Assurance Account1. Allowance Management System account, established by the Administrator under § 97.425(b)(3) for certain...
- Aster Yellows(Phytoplasma infection of asters.) Symptoms that are characteristic of diseases caused by phytoplasmas...
- AsteralesOrder of flowering plants which includes the composites or daisies.
- AstheniaLack or loss of strength; weakness
- Asthma1. A disease that affects a person's lungs and can make it difficult to breathe. Many factors can trigger an...
- ASTM Standard Guide 1465-92A guidance booklet published in 1992 by the American Society for Testing and Materials according to their...
- AstringentCausing contraction, usually locally after surface application
- Astronomical TideThe tidal levels and character which would result from gravitational effects, e.g. of the Earth, Sun and...
- Asymmetric(A-see-MET-rick) Not similar in size, shape, form or arrangement of parts on opposite sides of a line, point...
- Asymmetric Measure of AssociationA measure of association that makes a distinction between independent and dependent variables.
- Asymptomatic IndividualIndividual who, although infected with he microbe or virus causing a communicable disease, does not show any...
- asymptoteA line that is considered to be the limit to a curve. As the curve approaches the asymptote, the distance...
- Asymptotic Correlation MatrixThis table provides the user with a matrix of correlation estimates between each of the parameters. If these...
- Asymptotic Test1. Statistical tests that approach known properties as sample sizes increase.
- At Risk IndividualPerson or persons with an increased likelihood of a disease or other health issue, eg smoking, drug use, teen...
- AtaxisFailure of muscular coordination; irregularity of muscular action
- AtherosclerosisBuild-up of fatty material and calcium deposition in the arterial wall resulting in partial or complete...
- Atmosphere1. The air or gases that surround a planetary body such as the Earth.
- Atmosphere Absorption1. The process in which incident radiant energy is retained by a substance by conversion to some other form...
- Atmosphere Aerosol1. Particulate matter, solid or liquid, larger than a molecule but small enough to remain suspended in the...
- Atmosphere ArgonColorless monatomic gas. Atomic Number is 18.
- Atmosphere Boundary Layer1. Same as Boundary Layer - in general, a layer of air adjacent to a bounding surface. Specifically, the term...
- Atmosphere Carbon DioxideA naturally occurring gas made of carbon and oxygen. Sources of carbon dioxide in the atmosphere include...
- Atmosphere Chemical ReactionThose gaseous reactions taking place in the atmosphere
- Atmosphere CirculationAir circulation on a large-scale
- Atmosphere CloudA visible aggregate of minute water droplets or ice particles in the atmosphere above the Earth's surface.
- Atmosphere ConstituentGases, particles, ions, vapors, and aerosols in the earth's atmosphere.
- Atmosphere Convection1. In meteorology, the term is used specifically to describe vertical transport of heat and moisture in the...
- Atmosphere Formation ProcessMechanisms of earth's atmosphere creation and evolution
- Atmosphere Gas RemovalMechanisms by which gases are removed from the atmosphere
- Atmosphere HydrocarbonsChemical compounds existing in the atmosphere that consist entirely of carbon and hydrogen.
- Atmosphere InstabilityThe tendency for air parcels to accelerate when they are displaced from their original position; especially...
- Atmosphere RadiationInfrared radiation (energy in the wavelength interval of 3- 80 micrometer) emitted by or being propagated...
- Atmosphere TurbulenceIrregular motion of the atmosphere, as indicated by gusts and lulls in the wind.
- Atmosphere Vertical Layer1. The atmosphere can be divided into a number of layers according to its mixing or chemical characteristics...
- Atmosphere Window1. The spectral region between 8.5 and 11.0 microns where the atmosphere is essentially transparent to...
- Atmosphere-Supplying RespiratorA respirator that provides clean air from an uncontaminated source to the facepiece. Examples include...
- atmosphericRelating to the atmosphere, or the air above the Earth.
- Atmospheric CellConvection in the form of a single updraft, downdraft, or updraft/downdraft couplet, typically seen as a...
- Atmospheric ChemistryStudy of chemical processes and transformation occurring in the atmosphere impacting air pollution and global...
- Atmospheric Deposition1. The process by which airborne pollutants settle onto land or water. "Wet deposition" refers to pollutants...
- Atmospheric DistillationDistillation under atmospheric pressure.
- Atmospheric LifetimeAtmospheric lifetime is the average time that a molecule resides in the atmosphere before it is removed by...
- Atmospheric Mass Balance of Industrially Emitted and Natural SulfurExperimental investigation by the MAP3S community
- Atmospheric Photochemical Reaction1. Chemical reactions in the atmosphere which are driven by light or ultraviolet radiation. Environmental...
- Atmospheric PollutionThe presence of contaminants in the air in concentrations that prevent the normal dispersive ability of the...
- Atmospheric Pressure Chemical Ionization Mass SpectrometryType of atmospheric pressure ionization mass spectrometry in which the ionization is caused by chemical/ion...
- Atmospheric Pressure Ionization Mass SpectrometryMethod of mass spectrometry in which the species to be analyzed are ions created by interactions between...
- Atmospheric Pressure Storage TankVessel (excluding sumps) operating at atmospheric pressure that is designed to contain an accumulation of...
- Atmospheric RidgeAn elongated area of relatively high atmospheric pressure; the opposite of trough.
- Atmospheric RiverLarge, narrow sections of the Earth’s atmosphere that carry moisture from the Earth’s tropics near the...
- Atmospheric Storm Type1. Any disturbed state of the atmosphere, especially affecting the Earth's surface, and strongly implying...
- Atmospheric Transformation1. The process by which chemicals are transformed in the air into other chemicals. When a chemical is...
- Atmospheric Transformation (secondary formation)The process by which chemicals are transformed into other chemicals in the air (atmosphere). When a chemical...
- Atmospheric TroughAn elongated area of relatively low atmospheric pressure, usually not associated with a closed circulation...
- Atmospherically Deposited MercuryDivalent mercury Hg(II), also known as reactive gaseous mercury or RGM deposited from the air.
- Atmospherically Deposited NitrateNitrate that has been transferred from the air to the surface of the Earth, either in wet form (rain, fog...
- AtollA ring-like coral reef that nearly (or entirely) encloses a reef lagoon. The volcanic island normally...
- Atom1. The smallest unit of a chemical element; composed of protons, neutrons and electrons.
- Atom Economy MaximizationDesign syntheses so that the final product contains the maximum proportion of the starting materials. Waste...
- Atomic Absorption SpectroscopyA spectrometric method that determines the type and concentration of metal elements in a sample, based upon...
- Atomic Emission SpectroscopyType of emission spectroscopy in which the bright spectral lines originate in electronic transitions in atoms.
- Atomic Energy ActFor the development and control of atomic energy.
- Atomic Force MicroscopyA technique utilizing a scanning probe to image and analyze the surface of a material with atomic-level...
- Atomic number1. The number of protons in the nucleus of an atom equal to the number of electrons in a neutral atom.
- Atomic weight1. The total number of protons and neutrons in the nucleus of an atom.
- Atomization1. Conversion of a liquid into a spray or mist (i.e., collection of drops), often by passing the liquid...
- AtomsMinute particles that are the basic building blocks of all chemical elements and thus all matter.
- Atopic DiseasesGroup of diseases linked by a shared underlying problem with the immune system and include asthma, allergic...
- ATP HydrolysisATP Hydrolysis is the cleavage of a high-energy phosphate bond of adenosine triphosphate by the addition of...
- Atramentous NecrosisA coral disease characterized by spreading black lesions, often covered by a white film.
- AtrazineCASARN 1912-24-9 Atrazine is an herbicide that does not occur naturally. Pure atrazine is an odorless, white...
- Atrazine Immunoassay Test KitDetects atrazine in various drinking and environmental water matrices within hours.
- Atrial SiphonIn tunicates, the opening that carries water, wastes, and gametes from the organism. Also called the...
- at-risk populationAny group who may be more susceptible to more serious symptoms or side effects from an illness than the...
- Atrophy1. Any weakening or degeneration, especially through lack of use.
- Attachment PointMonetary level of expenditures that must be exhausted before payment from an insurance policy begins.
- Attachment StageA stage in an animal's life cycle when it ceases being free swimming or motile, and becomes attached to a...
- AttackA hostile action taken against the United States by foreign forces or terrorists, resulting in the...
- Attainment Area1. A geographic area in which levels of a criteria air pollutant meet the health-based primary standard...
- Attainment DateDate by which an area, under an approved State implementation plan, is required to attain the PM2.5 NAAQS...
- Attainment DemonstrationRequirement in section 182(b)(1)(A) of the Act to demonstrate that the specific annual emissions reductions...
- Attention Deficit Hyperactivity Disorder1. Brain disorder marked by an ongoing pattern of inattention and/or hyperactivity-impulsivity that...
- Attenuated VaccineVaccine in which live microbe is weakened (attenuated) through chemical or physical processes in order to...
- Attenuation1. The process by which a compound is reduced in concentration over time, through absorption, adsorption...
- Attenuation, attenuateA reduction in energy or amplitude caused by the physical characteristics of a transmitting system.
- AttenuatorWave energy capture device with principal axis oriented parallel to the direction of the incoming wave that...
- Atterberg limitsThe moisture contents which define a soil's liquid limit, plastic limit, and sticky limit.
- AttestorCPA or CIA performing the agreed-upon procedures engagement under this subpart.
- AtticThe usually unfinished space above a ceiling and below a roof.
- Attic FanA fan mounted on an attic wall used to exhaust warm attic air to the outside.
- Attic VentA passive or mechanical device used to ventilate an attic space, primarily to reduce heat buildup and...
- AttitudeA learned predisposition manifesting itself in a general state of readiness either to evaluate or to react...
- Attitude SurveysData collection techniques designed to collect standard information from a large number of subjects...
- Attorney General's Statement (Certification)A statement prepared by the state attorney general (or the attorney for the state agencies which have...
- Attorney Work ProductInformation covering materials prepared in anticipation of litigation that is protected from discovery.
- AttractantA chemical or agent that lures insects or other pests by stimulating their sense of smell.
- AttractantsAttractants are traps containing a pesticide and food to lure insects or rodents inside. However, food is not...
- attributable proportionA measure of the public health impact of a causative factor; proportion of a disease in a group that is...
- Attribute1. A quality or characteristic of an ecological entity. An attribute is one component of an assessment...
- Attribute Utility1. A measure of the value of a particular attribute or characteristic as an aid in decision-making.
- Attribution1. The assertion that certain events or conditions were, to some extent, caused or influenced by other events...
- Attributional Life Cycle Assessment1. An LCA that accounts for flows/impacts of pollutants, resources, and exchanges among processes within a...
- Attrition1. The loss of subjects during the course of a study. This may be a threat to the validity of conclusions if...
- Atypical ElementAny chemical element found in a fuel or additive product which is not allowed in the baseline category of the...
- Auction1. With regard to CSAPR NOX Annual allowances, the sale to any person by a State or permitting authority, in...
- Auction SubaccountSubaccount in the Special Allowance Reserve, as specified in section 416(b) of the Act, which contains...
- AudiovisualGeneric term for media and format that employs pictures and sound. When used specifically it commonly refers...
- AUDIOVISUAL RECORDSRecords in pictorial or aural form. Include still and motion pictures; graphic materials, such as posters and...
- Audit1. The systematic examination of records and the investigation of other evidence to determine the propriety...
- Audit (end-use)A systematic accounting of water uses by end users (residential, commercial, or industrial), often used to...
- Audit (quality)A systematic and independent examination to determine whether quality activities and related results comply...
- Audit (system)A systematic accounting of water throughout the production, transmission, and distribution facilities of the...
- Audited FacilityFacility audited under an approved quality assurance plan under this part.
- Audited PartyFacility audited under an approved quality assurance plan under this part.
- AuditeeThe organization being assessed.
- Auditor1. A person qualified to perform audits.
- auger1. A tool for drilling/boring into unconsolidated earth materials (soil) consisting of a spiral blade wound...
- Auger MineA surface mine in which the coal bed is removed by means of a large diameter drill. Usually operated only...
- Augmentation ParametersAugmentation parameters are additional parameters that were measured at some of the buildings in the program...
- Augmented sample1. A grid-based sample whose size has been increased by using a denser grid.
- Aujeszky's DiseaseA highly contagious herpesvirus infection affecting the central nervous system of swine, cattle, dogs, cats...
- AustemperingHeat treatment of ferrous metals which produces unique microstructures, either bainite or ausferrite.
- Authigenic Carbonate OutcropThese outcrops result from the slow seepage of fluid containing dissolved carbon. They form pavements...
- Author Manuscript1. Version of a research paper that has been peer reviewed and accepted for publication by a journal.
- Authority DelegationIdentification, by position, the authorities for making policy determinations and decisions at headquarters...
- Authority Having JurisdictionTerm used to indicate what government branch is the regulator in this particular instance. Often used for...
- Authorization Application PackageThe application materials submitted by the state to EPA for review for state authorization. The package...
- Authorized Account Representative1. A responsible natural person who is authorized, in accordance with part 73 of this chapter, to transfer...
- Authorized Applicant1. Person authorized to complete the application on behalf of an industrial organization or political...
- Authorized Organizational RepresentativeThe individual who is authorized to sign on behalf of the proposing organization.
- Authorized PersonPerson specifically authorized by the owner or operator to enter, and whose duties require the person to...
- Authorized Program1. A state, Territorial, Tribal, or interstate NPDES program which has been approved or authorized by EPA...
- Authorized RepresentativePerson responsible for the overall operation of a facility or an operational unit (i.e., part of a facility)...
- Authorized Service NetworkGroup of independent service and repair facilities that are recognized by engine manufacturers as being...
- Authorized State1. A state, Territorial, Tribal, or interstate NPDES program which has been approved or authorized by EPA...
- Autism Spectrum DisordersIncludes a wide range of symptoms and levels of disability characterized by challenges with social skills...
- Auto RangingGas analyzer function that automatically changes the analyzer digital resolution to a larger range of...
- Autobody PrimerAutomotive primer or primer surfacer coating designed and labeled exclusively to be applied to a vehicle body...
- AutochoryThe process of seeds and fruits dispersal by means of some kind of explosive physical expulsion.The fruit...
- AutochthonousDerived from within a system, such as organic matter in a stream resulting from photosynthesis by aquatic...
- Autochthonous MaterialDerived from within a system, such as organic matter in a stream resulting from photosynthesis by aquatic...
- Autoclave1. A device that uses steam to sterilize equipment and deactivate bacteria, viruses, fungi, and spores.
- Autocrine CommunicationMode of communication wherein a bound hormone affects the function of the cell type that produced the hormone.
- Autoecious Rust FungusFungi with life cycles that remain on a single host are called autoecious.
- autoignition temperatureThe temperature at which a substance will spontaneously ignite. Autoignition temperature is an indicator of...
- Autoimmune Diseases1. Disorders that are characterized by the production of antibodies that react with host tissues or immune...
- Autoimmune ProcessA specific humoral or cell-mediated immune response against autologous (self) antigens. An autoimmune process...
- AutolysisThe destruction of organism cells or tissues by the organism's own enzymes or processes.
- Automated Calibration MethodThese are used to improve objectivity and reproducibility. The optimization process can identify the...
- Automated Clearing House1. Electronic wire transfer system to pay recipients through the Federal Reserve System and their local bank...
- Automated Continuous Parameter Monitoring SystemContinuous parameter monitoring system that automatically both records the measured data and calculates...
- Automated Data Acquisition and Handling System1. Component of the CEMS, COMS, or other emissions monitoring system approved by the Administrator for use in...
- Automated Detergent Blending Facility1. Any facility (including, but not limited to, a truck or individual storage tank) at which detergent is...
- Automated Export System Filing Compliance DateDate that EPA announces in the FEDERAL REGISTER, on or after which exporters of hazardous waste and exporters...
- Automated Fill Lines Fast Turnaround OperationOperation involving more than 8 changes of formulation in a 30 consecutive day period that are of such degree...
- AUTOMATED INFORMATION SYSTEMAn information system that usually involves the use of a computer. Often used as a synonym for an electronic...
- Automated Liquids UnloadingUnloading that is performed without manual interference. Examples of automated liquids unloadings include a...
- Automated MethodMethod for measuring concentrations of an ambient air pollutant in which sample collection (if necessary)...
- Automated Monitoring and Recording System1. Any means of measuring values of monitored parameters and creating a hard copy or computer record of the...
- Automatic CapacitorAutomated Capacitors can increase the voltage on a distribution circuit by providing reactive power (often...
- AUTOMATIC DATA PROCESSINGSystematically performing a series of actions with data by using automatic machines, primarily electronic...
- Automatic Detacher or Automatic Take offA device for sensing the end of milk flow in the milking machine which shuts of the milking vacuum and...
- Automatic Gain ControlA process for increasing the amplitude of a trace with time, thus making all events on the trace appear to be...
- Automatic Temperature CompensatorDevice that continuously senses the temperature of fluid flowing through a metering device and automatically...
- Automatic Waste Feed Cutoff SystemSystem comprised of cutoff valves, actuator, sensor, data manager, and other necessary components and...
- Automobile1. Any four-wheeled vehicle propelled by fuel which is manufactured primarily for use on public streets...
- Automobile and Light Duty Truck Assembly PlantFacility which assembles automobiles or light-duty trucks, including coating facilities and processes.
- Automobile and Light Duty Truck BodyExterior surface of an automobile or light-duty truck including hoods, fenders, cargo boxes, doors, and grill...
- Automobile CoatingBoth original equipment manufacturer coatings and refinish coatings. The coatings consist of one or more...
- Automobile Data FleetFleet of automobiles tested at “zero device-miles” in “baseline configuration,” the “retrofitted...
- Automobile DealerPerson who resides or is located in the United States, any territory of the United States, or the District of...
- Automobile ExhaustProducts of the combustion in the automobile engine. Exhaust pollutants include hydrocarbon emissions...
- Automobile Refinish Coating ComponentAny portion of a coating, such as a reducer or thinner, hardener, additive, etc., recommended (by its...
- Automobile Refinish Coating Component ImporterAny company, group, or individual that brings automobile refinish coatings or coating components from a...
- Automobile Refinish Coating Component ManufacturerAny company, group, or individual that produces or packages automobile refinish coatings or coating...
- Automobile Refinish Coating ImporterAny company, group, or individual that brings automobile refinish coatings or coating components from a...
- Automobile Refinish Coating ManufacturerAny company, group, or individual that produces or packages automobile refinish coatings or coating...
- Automobile RefinishingProcess of coating automobiles or their parts, including partial body collision repairs, that is subsequent...
- Automobile Repair & MaintenanceThis industry group comprises establishments involved in providing repair and maintenance services for...
- Automotive Bumper and Trim ProductProduct, including adhesion promoters and chip sealants, designed and labeled exclusively to repair and...
- Automotive Care ProductProducts such as waxes, buffing compounds, polishes, degreasers, soaps, wheel and tire cleaners, leather care...
- Automotive OperatorAny person who installs, services or maintains a retrofit device in an automobile or who operates an...
- Automotive PlasticsPlastics used in automobiles. Common types include polyolefin resins, polyurethane, and unsaturated...
- Automotive Retrofit DeviceAny component, equipment, or other device (except a flow measuring instrument or other driving aid, or...
- Automotive Service TechnicianInspects, maintains, and repairs automobiles and light trucks that run on gasoline, electricity, or...
- Automotive Windshield Washer FluidAny liquid designed for use in a motor vehicle windshield washer system either as an antifreeze or for the...
- Autonomic Nervous SystemGenerally speaking, the autonomic nervous system regulates the internal environment during both peaceful...
- Autonomous Replicating SequenceAny eukaryotic DNA sequence that initiates and supports chromosomal replication; also called autonomous(ly)...
- Autonomy1. The capacity for self-governance, i.e. the ability to make reasonable decisions.
- Autophagy1. Autophagy is a biological process that involves the lysosomal degradation of intracellular components...
- AutopsyPostmortem examination of the body.
- Autosome1. A chromosome not involved in sex determination. The diploid human genome consists of a total of 46...
- autotrophicDesignating or typical of organisms that derive carbon for the manufacture of cell mass from inorganic carbon...
- Autotrophic MicroorganismOrganisms which are capable of producing organic matter from inorganic materials by utilizing energy, such as...
- Autoventing TurbineA hydroturbine with pressure-relieving ports that are open to the atmosphere.
- Auxiliary BatteryIn an electric drive vehicle, the low-voltage auxiliary battery provides electricity to start the car before...
- Auxiliary Blowing AgentLow-boiling point liquid added to assist foaming by generating gas beyond that resulting from the...
- Auxiliary dataData derived from a source other than EMAP, that is, from an experiment or from another monitoring or...
- Auxiliary Emission Control Device1. Any element of design that senses temperature, motive speed, engine RPM, transmission gear, or any other...
- Auxiliary Engine1. Locomotive engine that provides hotel power, but does not provide power to propel the locomotive.
- Auxiliary Facility1. Under the Standard Industrial Classification (SIC) system, an auxiliary facility is defined as one that...
- Auxiliary Fuel1. Fuel used to augment the fuel value of sewage sludge. This includes, but is not limited to, natural gas...
- Auxiliary GeneratorA generator at the electric plant site that provides power for the operation of the electrical generating...
- Auxiliary Marine Diesel EngineMarine diesel engine that is not a propulsion marine diesel engine.
- Auxiliary Marine EngineMarine engine not used for propulsion. [40 CFR 90.3]
- Auxiliary Personal AidServices or devices that enable persons with impaired sensory, manual, or speaking skills to have an equal...
- Auxiliary PowerPower provided by the main propulsion engine to operate accessories such as cooling fans.
- Auxiliary SpillwayAny secondary spillway that is designed to be operated infrequently,
- AuxinsAcetic acid derivatives of the heterocyclic compound indole. (Merck Index, 11th ed)
- AuxosporeSpecialized cells that work to re-establish the normal size of a diatom after many mitotic cell divisions...
- Auxotrophic PlantAn organism which is unable to synthesize a particular organic compound required for its growth. An...
- Availability of InformationRCRA section 3006(f) and 40 CFR 271.17 requires that states make hazardous waste information available to the...
- Availability SessionInformal meeting at a public location where interested citizens can talk with EPA and state officials on a...
- Available Aircraft Deicing Fluid75 percent of the normalized Type I aircraft deicing fluid and 10 percent of the normalized Type IV aircraft...
- Available Chlorine1. A measure of the amount of chlorine available in chlorinated lime, hypochlorite compounds, and other...
- Available ExpansionThe vertical distance from the sand surface to the underside of a trough in a sand filter.
- Available InformationFor purposes of identifying control technology options for the affected source, information contained in the...
- Available supplyThe maximum amount of reliable water supply, including surface water, groundwater, and purchases under secure...
- Available System CapacityCapacity determined by subtracting the system load and the system emergency reserves from the net system...
- Available Water CapacityLoosely, the amount of water available for plants to use. Specifically, the volume of water released from...
- Available Water SupplyThe maximum amount of reliable water supply, including surface water, groundwater, and purchases under secure...
- Avalanche1. A large mass of material or mixtures of material falling or sliding rapidly under the force of gravity...
- Avena sativaThe common oat, a grain
- Average Batch Vent Concentration1. Determined by the procedures in § 63.1323(b)(5)(iii) for HAP concentrations and is determined by the...
- Average Batch Vent Flow Rate1. Determined by the procedures in § 63.1323(e)(1) and (e)(2).
- Average Concentration1. As it relates to chlorine discharge, the average of analyses made over a single period of chlorine release...
- Average Daily ConcentrationArithmetic mean of the concentration of a pollutant in milligrams per kilogram of sewage sludge (dry weight...
- Average Daily Dose1. Dose rate averaged over a pathway-specific period of exposure expressed as a daily dose on a...
- Average Daily Feed Production LevelAverage amount of animal feed products produced each day over an annual period. The initial determination of...
- Average Daily GainPounds of liveweight gained per day.
- Average Daily ValueAverage of the daily values obtained during any 30 days.
- Average Fuel Economy1. Unique fuel economy value as computed under § 600.510 for a specific class of automobiles produced by a...
- Average Monthly Discharge Limitation1. The highest allowable average of daily discharges over a calendar month, calculated as the sum of all...
- Average Monthly Effluent LimitationThe highest allowable average of daily discharges over a calendar month, calculated as the sum of all daily...
- Average Most Probable DischargeThe USCG planning level that corresponds to EPA's ``small discharge'' is termed ``the average most probable...
- Average Process Water Usage Flow RateOf a contact cooling and heating water process in liters per day is equal to the volume of process water...
- Average RoughnessSize of finely distributed vertical surface deviations from a smooth surface, as determined when traversing a...
- Average (type of limitation)As used in the ELG Database, it relates to the duration of chlorine discharges in the Steam Electric Power...
- Average Volatile Organic ConcentrationMass-weighted average volatile organic concentration of a hazardous waste as determined in accordance with...
- Average Weekly Discharge Limitation1. The highest allowable average of daily discharges over a calendar week, calculated as the sum of all daily...
- Average-day demand1. A water system's average daily use based on total annual water production (total annual gallons or cubic...
- Averaging Compliance RecordShall include the calculations used to determine compliance with relevant standards on average, for each...
- Averaging for Clean Fuel VehiclesSale of clean-fuel vehicles that meet more stringent standards than required, which allows the manufacturer...
- Averaging for Non Road EnginesExchange of emission credits among engine families within a given manufacturer's product line.
- Averaging Set1. Meaning given in § 1036.740.
- averaging time1. The time period over which something is averaged (e.g., exposure, measured concentration).
- Avian BotulismA paralytic disease of birds caused by ingestion of a toxin produced by the bacteria Clostridium botulinum...
- Avian CholeraHighly contagious disease found in birds caused by the bacteria Pasteurella multocida.
- Avian InfluenzaAn Influenza A viral infection of wild birds or domestic fowl, certain strains of which cause high mortality...
- Avian PoxAvian pox is a slowly developing disease of birds caused by several different strains of avipoxvirus. A...
- Avian SalmonellosisA bacterial disease caused by a group of bacteria in the genus salmonella; all species of birds can contract...
- Avian Vacuolar MyelinopathyA neurological disease affecting waterbirds, primarily bald eagles and American coots, in the southern U.S...
- Avian West Nile FeverA mosquito-borne viral illness caused by the West Nile Virus, a Flavivirus and endemic to regions of Africa...
- Aviation Gasoline1. All special grades of gasoline for use in aviation reciprocating engines, as given in the American Society...
- Aviation HazardAccident cause factor in aviation.
- Aviation PrimerCoating designed and labeled exclusively to meet federal specification TT-P-1757.
- Aviation Propeller CoatingCoating designed and labeled exclusively to provide abrasion resistance and corrosion protection for aircraft...
- AvicideAn agent that kills birds
- AvobenzoneCommercial sunscreen agent which absorbs most ultraviolet (UV) radiation
- Avoided Cost1. The cost a utility would incur to generate the next increment of electric capacity using its own...
- avulsion1. A sudden cutting off or separation of land by a flood or by an abrupt change in the course of a stream; as...
- Award1. Financial assistance that provides support or stimulation to accomplish a public purpose. Awards include...
- Award ContractMSW landfill owner or operator enters into legally binding agreements or contractual obligations that cannot...
- Award Contracts & IAGsActivities to establish contracts and interagency agreements (IAGs) by determining opportunities, making them...
- Award Official1. The EPA official with the authority to execute assistance agreements and to take other actions authorized...
- AWARDING AGENCY1. With respect to a grant, cooperative agreement, or cost reimbursement contract, the Federal agency, and
- AwarenessAn understanding of the importance of conforming with the organization's environmental and health & safety...
- AwningAn architectural element for shading windows and wall surfaces placed on the exterior of a building; can be...
- Axial FilamentA bundle of microtubules and microtubule-associated proteins forming the core of each cilium or flagellum. In...
- Axial Flow Turbine1. A turbine in which the flow of a steam or gas is essentially parallel to the rotor axis.
- Axial to ImpellerThe direction in which material being pumped flows around the impeller or flow parallel to the impeller shaft.
- Axilla1. The underside concavity where the arm and the shoulder are joined.
- Axis of ImpellerAn imaginary line running along the center of a shaft (such as an impeller shaft).
- Axle ClearanceVertical distance from the level surface on which an automobile is standing to the lowest point on the axle...
- Axle Ratio1. Number of times the input shaft to the differential (or equivalent) turns for each turn of the drive...
- AxonThe single motor branch of a neuron that passes the nervous impulse away from the cell body to another neuron...
- azeotropeA mixture with a fixed boiling point that cannot be further separated by fractional distillation.
- azeotropic distillationA technique which uses the ability of selected organic compounds to form binary azeotropes with water to...
- Azimuthal map projectionOne of a class of map projections formed by projecting coordinates from the Earth's surface directly onto a...
2,484 of 30,736 terms in Environment terminology (MLC-0121). Request the full dataset.