Environment terminology · MLC-0121

Environment terms: T (1,357)

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Tidal powerA form of renewable energy generated from the natural rise and fall of the ocean.
tidal rangeThe vertical difference between normal high and low tides often computed as the elevation difference between...
Tidal RiverMost seaward reach of a river or stream where the salinity is typically less than or equal to 0.5 parts per...
Tidal Volume1. The volume of air inhaled/exhaled during normal breathing.
Tidal WatersThose waters that rise and fall in a predictable and measurable rhythm or cycle due to the gravitational...
Tidal wetlandA wetland (i.e., water of the United States) that is inundated by tidal waters. Tidal waters rise and fall in...
Tidal Wetland HabitatSheltered waters along the coast which are affected by both tides and freshwater run-off.
tidal wetlandsThose wetlands that are exposed to the periodic rise and fall of the astronomical tides (see tides and tides...
tide gaugeThe geographic location where tidal observations are conducted; consisting of a water level sensor, data...
tide-dominatedA barrier or coastal area where the morphology is primarily a product of tidal processes.
Tide-Dominated BeachBeaches that occur in areas of high tide range (10-15 times the wave height) and usually lower waves; wave...
tidelandsThose lands that are flooded during times of high water, and are hence available to the public under the...
Tide-Modified BeachBeaches that occur in areas of high tide range (3-15 times the wave height) and usually lower waves (less...
TidepoolA pool of salt water left by an ebbing tide that generally persists until the next flood tide. These normally...
tide(s)The alternating rise and fall of the surface of the ocean and connected waters, such as estuaries and gulfs...
Tides1. The rise and fall of ocean waters produced by the gravitational pull of the moon and the sun.
tides, astronomicalThe alternating rise and fall of the ocean surface and connected waters, such as estuaries and gulfs, that...
Tie LineThe transmission connection between two individual balancing areas.
Tie Stall BarnA dairy farm where cows are confined in a totally or partially enclosed structure and are confined in...
Tie Stall ParlorFacility is frequently used for both housing and milking. Cows are tied and milked with the cow and operator...
Tier 0 EngineRelating to an engine that is subject to the Tier 0 NOX standards specified in §87.21.
Tier 1 EngineEngine subject to the Tier 1 emission standards listed in § 89.112(a).
Tier 1 resourceA specific designation given an EMAP resource class that will be treated as a stratum at Tier 2.
Tier 1/Tier 2The EMAP design is a multi-stage, or multiphase, design. These two terms describe the multi-stage structure...
Tier 2 Engine1. Engine subject to the Tier 2 emission standards listed in § 89.112(a).
Tier 2 HLDT/MDPVAny heavy light-duty truck or medium-duty passenger vehicle, including HEVs and ZEVs, of the 2008 or later...
Tier 2 LDV/LLDTAny lightduty vehicle or light light-duty truck, including HEVs and ZEVs, of the 2004 or later model year...
Tier 2 VehicleAny vehicle certified to comply with the Tier 2 FTP exhaust standards contained in §86.1811-04 including the...
Tier 3 EngineEngine subject to the Tier 3 emission standards listed in § 89.112(a).
Tier 3 VehicleRelating to the Tier 3 emission standards described in §§86.1811-17, 86.1813-17, and 86.1816-18.
Tier 3/Tier 4The general investigation of status and nature of environmental issues involves other levels of investigation...
Tier 4 EngineRelating to an engine that is subject to the Tier 4 NOX standards specified in §87.21.
Tier 6 EngineRelating to an engine that is subject to the Tier 6 NOX standards specified in §87.23.
Tier 8 EngineRelating to an engine that is subject to the Tier 8 NOX standards specified in §87.23.
Tier I CriteriaNumeric values derived by use of the Tier I methodologies in appendixes A, C and D of this part, the...
Tier I Water Quality CriteriaNumeric values derived by use of the Tier I methodologies in appendixes A, C and D of this part, the...
Tier II ValueNumeric values derived by use of the Tier II methodologies in appendixes A and C of this part, the...
Tier II Water Quality ValueNumeric values derived by use of the Tier II methodologies in appendixes A and C of this part, the...
tiered analysis1. An analysis arranged in layers/steps. Risk assessments/analyses are often conducted in consecutive...
Tiered Exposure AssessmentAt each stage of a tiered exposure assessment, investigators evaluate whether the assessment results are...
Tiered Permit Limit1. A permit limit that only applies to the discharge when a certain threshold (e.g., production level)...
Tiered Permit LimitsPermit limits that apply to the discharge only when a certain threshold (e.g., production level), specific...
Tiered TestingAny of a series of tests that are conducted as a result of a previous test's findings.
Tiering"Tiering" refers to the coverage of general matters in broader Environmental Impact Statements (such as...
Tiers and TypesExposure scenarios can be developed to support different tiers and types of exposure assessments. Individual...
Tight Gas1. Is natural gas trapped in a highly mixed mineralogy sandstone, shale, or limestone formations which has...
Tight sandsA geological formation consisting of a matrix of typically impermeable, non-porous tight sands.
Tile Drain1. Buried perforated pipe designed to remove excess water from soils.
tile drainsPipe made of perforated plastic, burned clay, concrete, or similar material laid to a designed grade and...
TileboardHardboard that meets the specifications for Class I given by the standard ANSI A135.4-2012 (incorporated by...
tillUnconsolidated sediment deposited directly by a glacier.
Till SurfaceAn area of substrate (predominantly unsorted and unstratified drift) that is generally unconsolidated...
Tillage1. The mechanical manipulation of soil performed to nurture crops. Tillage can be performed to accomplish a...
TillerA plant shoot that arises from the root or base of a plant.
TilletiaA genus of pathogenic smut fungi which affect grasses.
TilthThe overall physical character of soil with regard to its suitability for crop production.
Tilting Reverberatory FurnaceMetallurgical or process furnace that isolates the material being processed from contact with fuel, but...
Timber Access RoadA temporary or permanent road over which timber is transported from a loading site to a public road. Also...
Timber ForwardingThe operation of moving timber products from the stump to a landing for further transport.
Timber HarvestingThe felling, skidding, processing, loading, and transporting of forest products.
Timber Selection MethodAn uneven-aged silvicultural system in which mature trees are removed, individually or in small groups, from...
Timber Stand ImprovementTraditionally, stand improvement was known as TSI or Timber Stand Improvement. TSI focused on concentrating...
Timber TreeTree species harvested and sold for lumber or timber use.
Time ComplexityA measure of the amount of CPU time required to carry out a computation; it varies with the amount of input...
Time constantThe time in seconds required for an analog system to record 63 percent of the change that actually occurred...
Time domainIn geophysics refers to measurements analyzed according to their behavior in time. The usual alternative is...
Time domain reflectometryA device, which measures electrical characteristics of wideband transmission systems. Commonly used to...
Time integrated samplingSampling conducted over a specific time period (e.g., from two days to a year or more) producing results...
Time LagThe time required for processes and control systems to respond to a signal or to reach a desired level.
Time Sharing System Management SystemTime Sharing System Management System (TSSMS) is the user control system used to manage accounts, among other...
Time weighting factorThis factor accounts for less-than-continuous exposure during a year.
Time-averaged exposureThe time-integrated exposure divided by the exposure duration. An example is the daily average exposure of an...
TIMEBOMBInternal date, usually conforming to contract date, within system that causes system to stop functioning when...
Time-Critical RemovalRemoval actions are generally of short-term response actions taken to abate or mitigate imminent substantial...
time-dosed pressure drip dispersal (flow equalization)A system configuration that includes sufficient effluent storage capacity to allow for uniform flow to a...
time-dosingA configuration in which a specific volume of effluent is delivered to a component according to a prescribed...
time-integrated sample1. Samples are collected over a period of time. Only the total pollutant collected is measured, and so only...
Timely Information"Timely information" means distributing information sufficiently far in advance so that the interested public...
Timely ResearchDelivering Products and Outputs in the timeframe necessary to support Agency decisions and actions and to...
Time-of-Flight Mass Spectrometry1. Method of mass spectrometry in which particles of different mass are separated by their different times of...
Time-of-Use PricingTime-of-use pricing (TOU) typically applies to usage over broad blocks of hours (e.g., on-peak=6 hours for...
TimerA device for automatically starting or stopping a machine or other device at a given time.
Time-series DesignsResearch designs that collect data over long time intervals - before, during, and after program...
time-trend study1. Samples spaced in time to capture systematic temporal trends (e.g., a facility might change its production...
Time-Weighted Average1. The average value of a parameter (e.g., concentration of a chemical in air) that varies over time.
TinnitusA noise in the ears, such as ringing, buzzing, roaring, clicking
Tin/Steel CanTin-coated steel containers such as cans used for food packaging. (U.S. EPA, 1993a)
Tin/Steel CansRefers to tin-coated steel containers such as cans used for food packaging. (U.S. EPA, 1993a)
Tintthe effect of adding white to a solid color or of screening a solid area.
Tint BaseCoating to which colorant is added in a paint store or at the site of application to produce a desired color.
tipping pointA critical point in the evolution of a system that leads to new and potentially irreversible effects at a...
Tire1. Any agricultural, airplane, industrial, mobile home, light-duty truck and/or passenger vehicle tire that...
Tire ComponentPiece of tread, combined tread/sidewall, or separate sidewall rubber, or other rubber strip that is combined...
Tire Manufacturing FacilityFactory in which tires are made.
Tire Processor1. Refers to an intermediate operating facility where recovered tires are processed in preparation for...
Tire Rolling Resistance LevelValue with units of kg/metric ton that represents that rolling resistance of a tire configuration. TRRLs are...
Tire-Derived FuelTires can be used as fuel either in shredded form - known as tire-derived fuel (TDF) - or whole, depending on...
Tires1. Refers to passenger car and light- and heavy-duty truck tires. Excludes high-speed industrial tires (from...
Tissue1. A group of similar cells.
Tissue Distribution KineticsRate at which substances are distributed through different body tissues.
Tissue GrowthAn increase is the size or mass of a tissue due to an increase in cell number.
Tissue LysisTissue structure disintegration and destruction due to action of endogenous or/and exogenous lytic substances...
Tissue NameName used to describe the tissue of a sample in legacy STORET.
Tissue-Specific Gene ExpressionExpression of different genes in different tissues.
Tissue-Specific SplicingAlternate splicing which is specific and typical for a given tissue.
Titanium Dioxide Chloride Process Oxidation ReactorReactor in which titanium is separated from the titanium ore by making titanium tetrachloride.
Title 40The 40th section of the Code of Federal Regulations (CFR), which deals with EPA's mission to protect human...
Title IIITitle III of the Superfund Amendments and Reauthorization Act of 1986, also titled the Emergency Planning and...
Title VTitle V of the 1990 Clean Air Act Amendments requires all major sources and some minor sources of air...
Title V Operating Permit1. Permit issued under title V of the Clean Air Act and part 70 or part 71 of this chapter. [40 CFR 97.2 (CFR...
Title V Operating Permit Regulation1. Regulations that the Administrator has approved or issued as meeting the requirements of title V of the...
Title V Permit1. Any permit issued, renewed, or revised pursuant to Federal or State regulations established under 40 CFR...
Titles1. Generally any words that appear on screen in a finished audiovisual production.
Titrate(TIE-trate) To TITRATE a sample, a chemical solution of known strength is added on a drop-by-drop basis until...
TMDL1. A TMDL or Total Maximum Daily Load is the calculation of the maximum amount of a pollutant allowed to...
TMDL DateThis should correspond to the date that EPA approved the official final TMDL submitted (such as the date on...
TNF Receptor Family ProteinMembers of the tumor necrosis factor receptor (TNFR) family play a key role in regulating the immune response...
Toilet FlapperValve in the toilet tank that controls flushing.
Toilet Tank Displacement DeviceA plastic bag or dam installed in a toilet tank to reduce flush volume. Considered effective only for...
Tolerance1. Permissible residue level for pesticides in raw agricultural produce and processed foods. Whenever a...
Tolerance ExemptionFormal determination by the Agency pursuant to FFDCA section 408(c), 21 U.S.C 346a(c), that no tolerance is...
Tolerance PetitionA formal request to establish a new tolerance or modify an existing one.
Tolerance ValueA numerical value that represents the relative sensitivity of a species or other taxon to a particular agent.
Tolerance with Regional RegistrationAny tolerance which is established for pesticide residues resulting from the use of the pesticide pursuant to...
TolerancesPermissible residue levels for pesticides in raw agricultural produce and processed foods. Whenever a...
Toll ManufacturerPerson who produces a product or intermediate made from specified unused materials pursuant to a written...
Tolling ContractorPerson who arranges for the production of a product or intermediate made from specified unused materials...
Toluene1. Please see the ATSDR fact sheet for toluene.
Tomato ProcessingProcessing of tomatoes into canned, peeled, whole, stewed, and related piece sizes; and processing of...
Tomato-Starch-Cheese Canned SpecialtyCanned specialties resulting from a combination of fresh and pre-processed tomatoes, starches, cheeses...
TomboloA sand or gravel bar or barrier that connects an island with the mainland (or with another island).
TomographyA method for determining the distribution of physical properties within the earth by inverting the results of...
TonnageThe amount of waste that a landfill accepts, usually expressed in tons per month. The rate at which a...
Too Numerous to Count1. The total number of bacterial colonies exceeds 200 on a 47-mm diameter membrane filter used for coliform...
Too Numerous to Count (regulatory)The total number of bacterial colonies exceeds 200 on a 47-mm diameter membrane filter used for coliform...
Tool and Die MakerAnalyze specifications, lay out metal stock, set up and operate machine tools, and fit and assemble parts to...
Tool kitA set - as applied to communications work - of articles, printed matter, teaching devices, etc. - for a...
Tool RepairEquipment and devices used to repair or maintain process equipment or to prepare molds, dies, or other...
Tooth DecayThe decay of a tooth, in which it becomes softened, discolored, and/or porous.
Top Down ControlWhere the top level of the trophic cascade controls the ecosystem structure
Top DressingThe application of compost or fertilizer on top of the soil during plant growth.
Top of the AquiferIn unconfined (water table) aquifers, the uppermost elevation of water, accounting for temporal variations...
Top Secret InformationNational security information or material which requires the highest degree of protection. The test for...
Top-Blown FurnaceAny BOPF in which oxygen is introduced to the bath of molten iron by means of an oxygen lance inserted from...
Topcoat1. Any coating or series of coatings applied over a primer or an existing finish for the purpose of...
Topcoat OperationTopcoat spray booth, flash-off area, and bake oven(s) which are used to apply and dry or cure the final...
Top-Down ProcessNanoscale material creation from its macro-scale counterpart.
Topic Map1. 1) A set of information resources regarded by a topic map application as a bounded object set whose hub...
Topics in RAINETopics in the RAINE database are areas of focus found in plans or products that describe how the impacts of...
Topographic MapProcess of creating a topographical map for the site.
Topographic WaveA sub-basin scale wave that is driven by wind-stress from the passage of cyclones across or along the shelf...
Topographical MappingThe process of creating a topographical map for the site.
Topography1. The relative positions and elevations of the landscape that describe the configuration of its surface.
Topoisomerase InteractionTopoisomerase Interaction involves temporary non-covalent binding through intermolecular physical forces of...
Topping and Back Pressure TurbineTurbines that operate at exhaust pressure considerably higher than atmospheric (noncondensing turbines)...
Topping-Cycle Cogeneration UnitCogeneration unit in which the energy input to the unit is first used to produce useful power, including...
Topping-Cycle UnitUnit in which the energy input to the unit is first used to produce useful power, including electricity...
Topside Port LidCover, removed during charging or decarbonizing, that is placed over the opening through which coal can be...
TopsoilThe A, O, and E soil horizon layers of the four master soil horizons.
Topsoil Stockpiling AreaArea outside the mined-out area where topsoil is temporarily stored for use in reclamation, including...
TornadoA violently rotating column of air, usually pendant to a cumulonimbus, with circulation reaching the ground...
TorporA state of decreased activity in animals characterized by depressed metabolism, reduced body temperature, and...
torrA unit of pressure needed to support a column of mercury 1 mm high under standard conditions.
TortAny wrongful act, damage, or injury done willfully, negligently, or in circumstances involving strict...
Tort LiabilityLegal accountability in a private civil matter, that the party which did the wrong repay the injured party.
Total Actual Annual Facility-Level Organic Liquid Loading VolumeTotal facility-level actual volume of organic liquid loaded for transport within or out of the facility...
Total Annual Cost Of Doing BusinessThe total annual operating expenses plus the required total annual reserve contributions to reserve funds.
Total Annual SalesTotal annual revenue (in dollars) generated by the sale of all products of a company. Total annual sales must...
Total Annualized CostThe annual cost associated with a control measure including capital, operating, and maintenance components...
Total AntimonyTotal antimony present in the process wastewater stream exiting the wastewater treatment system.
Total Arsenic1. Total arsenic, Parameter 6.
Total Budget (CWA 319)Sum of EPA budget, other federal funds, state funds, local funds and other funds for a project.
Total Cadmium1. Total cadmium. [40 CFR 437.2 (CFR 2013)][40 CFR 435.41 (CFR 2013)]
Total Capital CostThe total cost of installing a control measure. This cost includes all materials, equipment, labor, and land...
Total Chromium1. Total chromium. [40 CFR 437.2 (CFR 2013)]
Total CobaltTotal cobalt present in the process wastewater stream exiting the wastewater treatment system.
Total ColiformDef1: All coliform bacteria.
Total Coliform BacteriaA particular group of bacteria that are used as indicators of possible sewage pollution. This group includes...
Total Column OzoneThe total amount of ozone in a column of air stretching from the earth's surface to space. More than 90% of...
Total Column Sulfur DioxideThe total amount of sulfur dioxide in a column of air stretching from the earth's surface to space.
Total Copper1. Total copper, Parameter 22.
TOTAL COSTTotal cost of Federal award is comprised of the allowable direct cost of the program, plus its allocable...
Total Cyanide1. Parameter total cyanide.
Total Daily RainfallRainfall (precipitation) is measured every 15 minutes or 1 hour at this station. The total daily rainfall is...
Total DebtTotal Debt = Debt from Loans + Lease and Mortgage
Total dietary intakeThe sum of all foods in the following food categories: dairy, meats, fish, eggs, grains, vegetables, fruits...
Total Direct and Indirect EmissionSum of direct and indirect emissions increases and decreases caused by the Federal action; i.e., the “net”...
Total Dissolved PhosphorousThe total phosphorous content of all material that will pass through a filter, which is determined as...
Total Dissolved PhosphorusTotal phosphorus content of material that will pass through a filter of a specific size.
Total Dissolved Solids1. The quantity of dissolved material in a given volume of water.
Total Dynamic HeadWhen a pump is lifting or pumping water, the vertical distance (in feet) from the elevation of the energy...
total economic valueThe sum of all relevant use values and nonuse values for ecosystem goods and services of a change in a given...
Total Enclosure1. Structure or building around the coating applicator and flashoff area or the entire coating line for the...
Total EPA Funds (CWA 319)The USEPA provides funding from the Clean Water Act Section 319(h) Grant Program to states to implement...
Total fluid intakeConsumption of all types of fluids including tap water, milk, soft drinks, alcoholic beverages, and water...
Total Fluorides1. Elemental fluorine and all fluoride compounds as measured by reference methods specified in § 60.195 or by...
Total Hazardous Air Pollutant EmissionSum of the emissions of the following six compounds: acetaldehyde, acrolein, formaldehyde, methanol, phenol...
Total Hydrocarbon EmissionTotal hydrocarbon emissions that also serve as a surrogate for the emissions of organic HAP compounds.
Total Hydrocarbon Equivalent1. Sum of the carbon mass contributions of non-oxygenated hydrocarbons, alcohols and aldehydes, or other...
Total Hydrocarbons1. Combined mass of organic compounds measured by the specified procedure for measuring total hydrocarbon...
Total Hydrocarbons Measurement1. Organic compounds in the exit gas from a sewage sludge incinerator stack measured using a flame ionization...
Total Lead1. Total lead, Parameter 32.
Total Lung VolumeThe lung volume at maximal inspiration.
Total Mass Dioxins and Furans1. Total mass of tetra- through octa- chlorinated dibenzo-p-dioxins and dibenzofurans, as determined using...
Total Maximum Daily Load1. Generally refers to plans under the Clean Water Act that limit the amount of pollutant discharge over time.
Total Maximum Daily Load ProcessThe approach normally used to develop a TMDL for a particular waterbody or watershed. This process consists...
Total Maximum Daily LoadsCalculation of the maximum amount of a pollutant that a waterbody can receive and still meet water quality...
Total Mercury1. Total mercury. [40 CFR 437.2 (CFR 2013)][40 CFR 435.41 (CFR 2013)]
Total MetalSum of the concentration or mass of Copper (Cu), Nickel (Ni), Chromium (Cr) (total) and Zinc (Zn).
Total Metal Hazardous Air PollutantSum of the concentrations of compounds of antimony, arsenic, beryllium, cadmium, chromium, cobalt, lead...
Total Mixed RationRation formulated to meet requirements of the cow in which all of the ingredients are blended together in a...
Total NickelTotal nickel present in the process wastewater stream exiting the wastewater treatment system.
Total Nitrogen1. The sum of all nitrogen forms.
Total Non-Vinyl Chloride Organic Hazardous Air PollutantSum of the measured concentrations of each HAP, as calculated according to the procedures specified in §§...
Total Number of Certificates IssuedNumber of certificates for which fees have been paid. This term is not intended to represent multiple...
Total of Direct and Indirect EmissionsThe sum of direct and indirect emissions increases and decreases caused by the Federal action; i.e., the...
Total Organic Active IngredientsSum of all organic active ingredients covered by § 455.20(a) which are manufactured at a facility subject to...
Total Organic Carbon1. Measures the amount of organic carbon in water.
Total Organic Compounds1. Compounds measured according to the procedures in § 60.503.
Total Particulate PhosphorusTotal phosphorus content of material retained on a filter of a specific size.
Total Petroleum HydrocarbonTPH refers to a measure of concentration or mass of petroleum hydrocarbon constituents present in a given...
total petroleum hydrocarbons1. A measure of the concentration or mass of petroleum hydrocarbon constituents present in a given amount of...
Total Phenols1. Total phenolic compounds as measured by the procedure listed in 40 CFR part 136 (distillation followed by...
Total Phosphorus1. The sum of all phosphorus forms.
Total Planned Net Output CapacityPlanned generator output capacity, excluding that portion of the electrical power which is designed to be...
Total Projected Emissions Safety MarginAmount by which the total projected emissions from all sources of a given pollutant are less than the total...
Total quality managementA system that is implemented in every aspect of an organization with the focus of providing quality; that is...
Total Rated CapacitySum of the rated capacities of all fuel-burning equipment connected to a common stack. The rated capacity...
Total Reactive Chlorine Flux Injection RateSum of the total weight of chlorine in the gaseous or liquid reactive flux and the total weight of chlorine...
Total Reactive Fluorine Flux Injection RateSum of the total weight of fluorine in the gaseous or liquid reactive flux added to an uncontrolled group 1...
Total Recoverable Analyte1. The concentration of analyte determined to be in either a solid sample or an unfiltered aqueous sample...
total recoverable petroleum hydrocarbons1. A U.S. EPA method (418.1) for measuring petroleum hydrocarbons in samples of soil or water. Hydrocarbons...
Total Recovered Petroleum HydrocarbonA method for measuring petroleum hydrocarbons in samples of soil or water.
Total Reduced Sulfur1. Sum of the sulfur compounds hydrogen sulfide, methyl mercaptan, dimethyl sulfide, and dimethyl disulfide...
Total Residual Chlorine1. The amount of available chlorine remaining after a given contact time. The sum of the combined available...
Total Residual OxidantsFor intake water with bromides. Value obtained using any of the “chlorine - total residual” methods in Table...
Total Resource Cost TestCompares the present value of all costs of efficiency for all members of society compared to the present...
Total Resource Effectiveness Index Value1. Measure of the supplemental total resource requirement per unit reduction of TOC associated with an...
Total SeleniumTotal selenium present in the process wastewater stream exiting the wastewater treatment system.
Total Sewage Sludge SolidMaterials in sewage sludge that remain as residue when the sewage sludge is dried at 103 to 105 degrees...
Total SilverTotal silver, Parameter 62.
Total Smelter ChargeWeight (dry basis) of all copper sulfide ore concentrates processed at a primary copper smelter, plus the...
Total Solids1. The sum of dissolved and suspended solids usually expressed as a concentration or percentage on a wet...
Total SteamTotal of all steam that is supplied to a flare and includes, but is not limited to, lower steam, center steam...
Total Sulfide1. Total sulfide as measured by the potassium ferricyanide titration method described in appendix A or the...
Total Sulfur Dioxide EquivalentSum of volumetric or mass concentrations of the sulfur compounds obtained by adding the quantity existing as...
Total Suspended Particles1. A method of monitoring particulate matter by total weight.
Total Suspended Particulate MatterThe mass of particles suspended in a unit volume of air when collected by a high-volume air sampler.
Total Suspended Particulates1. Particulate matter as measured by the method described in appendix B of part 50 of this chapter.
Total Suspended Solids1. A measure of the suspended solids in wastewater, effluent, or water bodies, determined by tests for total...
Total tap waterWater consumed directly from the tap as a beverage or used in the preparation of foods and beverages (i.e...
Total TitaniumTotal titanium, Parameter 72.
Total Toxic ChemicalsTotal Toxic Chemicals include many, man-made substances such as solvents, pesticides, dioxins, PCBs, and...
Total Toxic Organics1. Sum of the mass of each of the following toxic organic compounds which are found at a concentration...
Total Trihalomethanes1. The sum of the concentration, in milligrams per liter, of the several trihalomethane compounds, rounded to...
Total UraniumMeasured by the procedure discussed in 40 CFR 141.25(b)(2), or an equivalent method.
Total Volatile HydrocarbonTotal amount of nonaqueous volatile organic matter determined according to Methods 204 and 204A through F of...
Total Volatile SolidsAmount of the total solids in sewage sludge lost when the sewage sludge is combusted at 550 degrees Celsius...
Total Waste AnalysisAnalytic test method used to measure compliance with most of the organic treatment standards. Carbon...
Total waterWater from tap water and non tap water sources including water contained in food.
Total Zinc1. Total zinc, Parameter 75.
TotalizerA device or meter that continuously measures and calculates (adds) total flows in gallons, million gallons...
Totally Chlorine-Free BleachingPulp bleaching operations that are performed without the use of chlorine, sodium hypochlorite, calcium...
Totally Enclosed and Unvented Dry Abrasive Blasting ChamberDry abrasive blasting enclosure which has no vents to the atmosphere, thus no emissions. A typical example of...
Totally Enclosed and Unvented OperationEnclosed so that no air enters or leaves during operation.
Totally Enclosed MannerAny manner that will ensure no exposure of human beings or the environment to any concentration of PCBs.
Totally Enclosed Treatment UnitsUnits that are designed and constructed to practically eliminate the potential for hazardous wastes to escape...
Totally Enclosed Waste Treatment FacilityFacility for the treatment of hazardous waste which is directly connected to an industrial production process...
Tote BinCompletely enclosed storage vessel used to hold liquid, solid, or gaseous commodities or cargos which are in...
Touchdown StationA workspace that is used as a substitute for a larger office environment. These stations are typically small...
Touchup and RepairApplication of finishing materials to cover minor finishing imperfections.
Touch-up and Repair CoatingCoating used to cover minor coating imperfections appearing after the main coating operation.
Touch-up and Repair OperationPortion of the coating operation that is the incidental application of coating used to cover minor...
Touchup BottleCoating container with a volume of 0.25 liter or less used with a brush or other non-atomizing applicator.
Touch-up CoatCoat applied to correct any imperfections in the finish after color or texture coats have been applied. This...
Touch-up CoatingCoating applied by brush, air-brush, or nonrefillable aerosol can to cover minor surface damage.
Tourism ImpactExtensive damage to the environment caused by recreation and tourism, including despoiling of coastlines by...
Tower FurnaceFurnace that consists of furnace and tower sections, allowing for the metling of metals while enabling the...
Towering CumulusA large cumulus cloud with great vertical development, usually with a cauliflower-like appearance, but...
Townships Boundary1. The Townships Boundary layer portrays the Public Land Survey System (PLSS) boundaries of the United States...
Tox One-LinerAn OPP summary of toxicology reviews for a particular active ingredient. For each entry, the One-liner lists...
Toxaphene1. Chemical that causes adverse health effects in domestic water supplies and is toxic to fresh water and...
ToxCast™An EPA Office of Research and Development research effort designed to develop a cost-effective approach for...
Toxic1. Ability (or property) of a substance to produce harmful or lethal effects on humans and/or the environment.
Toxic Algal BloomAlgal blooms can be toxic. Keep people and pets away from water that is green, scummy or smells bad.
Toxic Chemical1. Substances that can cause severe illness, poisoning, birth defects, disease, or death when ingested...
Toxic Chemical Preparation ProcessPreparation of a toxic chemical, after its manufacture, for distribution in commerce: (1) In the same form or...
Toxic Chemical Release FormInformation form required of facilities that manufacture, process, or use (in quantities above a specific...
Toxic Chemical Use SubstitutionReplacing toxic chemicals with less harmful chemicals in industrial processes.
Toxic Cloud1. An airborne mass of gases, vapors, fumes, or aerosols of toxic materials.
Toxic ConcentrationThe concentration at which a substance produces a toxic effect.
Toxic Dose1. The dose at which a substance produces a toxic effect.
Toxic EffectAdverse change in the structure or function of an experimental animal as a result of exposure to a chemical...
Toxic EquivalencyProduct of the concentration of an individual dioxin isomer in an environmental mixture and the corresponding...
Toxic Inorganic ChemicalRefers to a wide range of pollutants including metals, fire retardants, cyanide, and perchlorate (used in...
Toxic Inorganic ChemicalsToxic Inorganic Chemicals refer to a wide range of pollutants including metals, fire retardants, cyanide, and...
Toxic MaterialAny toxic pollutant identified in 40 CFR 401.15.
Toxic Mechanism of ActionThe mechanism by which chemicals produce their toxic effects, i.e., the mechanism by which a chemical alters...
Toxic MetaboliteHarmful product of metabolism generated by a living organism.
Toxic MoldsMolds that produce mycotoxins that can sicken or kill other organisms, including humans
Toxic Organic ChemicalHarmful, man-made chemicals that contain carbon. They can build-up in animal and fish tissue, lake and river...
Toxic Organic ChemicalsToxic Organic Chemicals are harmful, man-made chemicals that contain carbon. They can build-up in animal and...
Toxic Pollutant1. A pollutant or combination of pollutants, including disease-causing agents, which after discharge and upon...
Toxic Pollutant SourceAny building, structure, facility, or installation from which there is or may be the discharge of toxic...
Toxic Pollutants1. Materials that cause death, disease, or birth defects in organisms that ingest or absorb them. The...
Toxic Release Inventory1. TRI tracks the waste management of certain toxic chemicals that may pose a threat to human health and the...
Toxic Release Inventory Identification NumberA unique 15-character ID assigned for each facility within the Toxics Release Inventory (TRI)...
Toxic Releases to Air1. The environmental burden indicator for toxic releases to air measures the average annual chemical...
Toxic Substance1. A chemical or mixture that can cause illness, death, disease, or birth defects. The quantities and...
Toxic Substances Control Act1. To regulate commerce and protect human health and the environment by requiring testing and necessary use...
Toxic Substances Risk AssessmentActivities to accurately identify risks of toxic substances and accurately characterize these risks through...
Toxic Substances Risk ManagementActivities to identify cost effective requirements to ensure the proper manufacture, distribution, use...
Toxic Substances Risk MitigationActivities to support clear understanding and effective use and control practices by chemical manufacturers...
Toxic Tort ClaimsInclude a wide variety of claims of harm due to long-term exposure to toxic chemicals and contamination...
Toxic UnitsThe concentration of a chemical divided by a standard measure of its toxicity.
Toxic Use ReductionReducing the amount of toxic substances used to make, use, consume or dispose of a product
Toxic WasteA waste that can produce injury if inhaled, swallowed, or absorbed through the skin.
Toxicant1. A poisonous substance.
Toxicity1. The degree to which a substance or mixture of substances can harm humans or animals. Acute toxicity...
Toxicity Assessment1. Review of literature, results in toxicity tests, and data from field surveys regarding the toxicity of any...
Toxicity AssessmentsCharacterization of the toxicological properties and effects of a chemical, with special emphasis on...
Toxicity Characteristic1. Toxicity characteristic is one of the four criteria which define hazardous waste under Federal hazardous...
Toxicity Characteristic Leaching Procedure1. A test designed to determine whether a waste is hazardous or requires treatment to become less hazardous...
Toxicity Equivalence1. International method of expressing toxicity equivalents for dioxins and furans as defined in U.S. EPA...
Toxicity Identification and EvaluationA process that identifies the toxic components of an effluent or ambient medium by chemically manipulating...
Toxicity Identification Evaluation1. EPA process in which suspected toxic materials (in effluents) are characterized, identified, and confirmed.
Toxicity PathwaysThe 2007 NRC report on Toxicity Testing in the 21st Century envisioned that new technologies will help us to...
Toxicity Reduction Evaluation1. A site-specific study conducted in a stepwise process designed to identify the causative agent(s) of...
Toxicity reference valueA reference point (generally a dose or concentration) where exposures below that point are not likely to...
Toxicity SensitivityDifferences in toxic response resulting from toxicodynamics differences and/or toxicokinetics differences...
Toxicity Test1. The means by which the toxicity of a chemical or other test material is determined. A toxicity test is...
Toxicity Testing1. Biological testing (usually with an invertebrate, fish, or small mammal) to determine the adverse effects...
Toxicity ValueA numerical expression of a substance's exposure-response relationship that is used in risk assessments.
Toxicity weightThis weight is a proportional numerical weight applied to a chemical based on its toxicity. The toxicity of a...
Toxicity-WeightingA way to prioritize pollutant emissions based on risk. Pollutants that are more harmful have a higher...
Toxicodynamics1. The determination and quantification of the sequence of events at the cellular and molecular levels...
Toxicogenomics1. Study of the roles that genes play in the biological responses to environmental toxicants and stressors by...
toxico-infectious pathogenOne of three broad classes of foodborne pathogens - infectious, toxico-infectious or toxigenic - based on...
Toxicokinetics1. The passage through the body of a toxic agent or its metabolites, usually in an action similar to that of...
Toxicological ProfileAn examination, summary, and interpretation of a hazardous substance to determine levels of exposure and...
Toxicology1. The study of harmful interactions between chemical, physical, or biological agents and biological systems.
Toxics Release Inventory1. A database that contains information concerning waste management activities and the release of toxic...
Toxics Release Inventory - Made EasyA software tool to help facilities determine and complete their Emergency Planning and Community...
Toxics Release Inventory ChemicalChemicals and chemical categories that appear on the current TRI toxic chemical list, at...
Toxics Release Inventory chemicalsThe chemicals and chemical categories that appear on the current TRI toxic chemical list...
Toxics Release Inventory facilitiesThe facilities that are required by Section 313 of the Emergency Planning and Community Right-to-Know Act...
Toxics Release Inventory FacilityThe facilities that are required by Section 313 of the Emergency Planning and Community Right-to-Know Act...
ToxigenicProducing toxic substances.
Toxigenic FungusFungus that can produce mycotoxins
toxin1. A chemical, physical, or biological agent that causes disease or some alteration of the normal structure...
toxinogenic pathogenOne of three broad classes of foodborne pathogens - infectious, toxico-infectious or toxigenic - based on...
ToxocariasisInfection by round worms of the genus Toxocara, usually found in wild and domesticated cats and dogs and...
Toxoplasma gondiiA genus of protozoa parasitic to birds and mammals. T. gondii is one of the most common infectious pathogenic...
ToxoplasmosisToxoplasmosis is an infection due to the parasite Toxoplasma gondii. Toxoplasmosis is found in humans...
ToxRefDBA comprehensive relational database of mammalian toxicity studies developed by EPA's Office of Research and...
Trace ElementAn element found in only minor amounts in water, generally less than 1.0 milligram per liter. Includes...
Trace Gas1. Any one of the less common gases found in the Earth's atmosphere. Nitrogen, oxygen, and argon make up more...
Trace Organic AnalysisQualitative chemical analysis of drinking water, effluents, etc., for trace amounts of organic pollutants.
Trace Reactive GasGases which are chemically reactive and exist in very small amounts in the lower atmosphere. Examples include...
Traceable Measurement ResultMeasurement result from a local standard whereby the result can be related to the International System of...
Traceable Standard1. A local standard has been compared and certified either directly or via not more than one intermediate...
TracerA substance that is identifiable by virtue of its radioactive signature, color, or other distinguishing...
Tracer Gases1. Compounds, such as sulfur hexafluoride, which are used to identify suspected pollutant pathways and to...
Tracer log1. Also called tracejector log; a log made for the purpose of measuring fluid movement in a well by means of...
Tracer-element studiesSoil ingestion studies that use trace elements found in soil and poorly metabolized in the human gut as...
Trachea1. The fibrocartilaginous, mucous-lined tube passing from the larynx to the bronchi.
Tracheary ElementXylem cells in plants for water transport.
TrackTerm used for the areas in the American Petroleum Institute log grid that are standard for most large...
Track Width1. Meaning given in § 86.1803 of this chapter.
Tracking NumberSystem-generated number that allows a user to search for their comment on Regulations.gov.
Traction Battery PackStores electricity for use by the electric traction motor .
Tractor1. Vehicle meeting the definition of “tractor” in 40 CFR 1037.801, but not classified as a “vocational...
Tractor EngineEngine certified for use in tractors. Where an engine family is certified for use in both tractors and...
Tractor Trailer TruckFront part of the truck (with the engine) and its trailer
TradeTo exchange emission credits, either as a buyer or seller.
Trade AgreementDocument that specifies the overall trading policies that trading parties must follow to participate in...
Trade Name ProductA chemical or mixture of chemicals that is distributed to other persons and that incorporates a toxic...
Trade OffWhat someone is willing to give up to get something else.
Trade Secrecy ClaimA submittal under sections 303 (d)(2) or (d)(3), 311, 312 or 313 of Title III in which a chemical identity is...
Trade Secret1. Any confidential formula, pattern, process, device, information, or set of data that is used in a business...
Trade WindPersistent tropical winds that blow from the subtropical high pressure centers towards the equatorial low.
tradeoffGenerally, an exchange of one thing in return for another, especially relinquishment of one benefit or...
Trading1. An innovative approach to achieve water quality goals more efficiently. Trading is based on the fact that...
Trading LimitLevel of control on the pollutant discharge the point source seller chooses to achieve, through technology or...
Trading ProgramThe basic approach is that the environmental authority can issue a fixed number of marketable permits to...
Traditional FuelMaterials that are produced as fuels and are unused products that have not been discarded and therefore, are...
Traditional navigable watersWaters defined as navigable before passage of the CWA and their tributaries, including interstate waters...
Traffic Marking CoatingCoating formulated and recommended for marking and striping streets, highways, or other traffic surfaces...
Traffic Proximity and Volume1. The environmental burden indicator for traffic proximity measures the count of vehicles per day (average...
Traffic-Related Air Pollution1. Air pollution from emission of vehicular combustion products
Tragedy of the CommonsThe actions of individuals each acting in their own self-interest lead to an outcome that is not in the best...
TrailerPiece of equipment designed for carrying cargo and for being drawn by a tractor when coupled to the tractor's...
Trained RCRA ProfessionalPerson who has completed the applicable RCRA training requirements of § 262.17 for large quantity generators...
TraineeStudent selected by the recipient organization who receives support to meet the objectives in § 45.110.
TrainingAcquiring knowledge, skills, and abilities that promote maximum proficiency in the performance of official...
Training CostsCosts associated with continued education, conferences, and certifications for supporting staff. This could...
Training ProgramAny program that provides information to and evaluates the knowledge of a Class A, Class B, or Class C...
TramadolA narcotic analgesic proposed for severe pain. It may be habituating.
Transaction CostThe costs incurred when buying or selling a good or service. They may include the costs of searching out a...
Transaction costsThe costs incurred when buying or selling a good or service. They may include the costs of searching out a...
TransaminationChemical reaction which transfers an amino group from an amino acid to a ketoacid.
Transboundary MovementMovement of hazardous wastes from an area under the national jurisdiction of one country to an area under the...
Transboundary PollutantsAir pollution that travels from one jurisdiction to another, often crossing state or international...
Transboundary PollutionAir pollution that travels from one jurisdiction to another, often crossing state or international...
Transcription1. A genetic process in which single-stranded RNA with base sequence complementary to a region of plus strand...
Transcription ElongationThe RNA polymerase moves along the DNA template, adding nucleotides to the growing RNA chain in accordance...
Transcription InitiationTranscription Initiation involves RNA polymerase (and usually other factors) binding at a specific gene...
Transcription ProcessA Transcription Process is any cellular event or activity directly involved in the synthesis a nascent RNA...
Transcription TerminationTranscription Termination is the cessation of cellular activities involved in the synthesis a nascent RNA...
Transcriptional ActivationThe process by which an unexpressed gene is activated to serve as a transcription template for synthesis of...
Transcriptional RegulationThe control of gene expression at the level of RNA transcription.
Transcriptional RepressionDecreased expression of some gene product.
TranscriptomeCollection of all the transcripts present in a given cell. A transcriptome represents the very small...
TranscriptomicsStudy of gene expression at the RNA level.
Transdisciplinary ResearchInvestigations that involve the widest span of disciplines from which different perspectives are brought to...
Transducer1. trans-DUE-sir) A device which senses some varying condition and converts it to an electrical signal for...
Transect StudyFor heat island monitoring purposes, a transect study measures temperature changes across a transect, or...
TransesterificationA process that includes chemical reactions of alcohols and triglycerides contained in vegetable oils and...
TRANSFER1. The act or process of moving records from one location to another, especially from office space to agency...
Transfer AirThe movement of indoor air from one space to another.
Transfer efficiencyThe percentage of material atomized through the spray gun that actually ends up as a coating on the desired...
Transfer Facilities1. Any transportation-related facility such as loading docks, parking areas, storage areas, or other similar...
Transfer FacilityAny transportation-related facility including loading docks, parking areas, storage areas and other similar...
Transfer Machine SystemMultiple-machine dry cleaning operation in which washing and drying are performed in different machines...
Transfer MoldingTransfer molding is a process similar to compression molding that is used for thermoplastics. However, unlike...
Transfer of the Toxic Chemical in Wastes to Off-Site LocationWastes sent to any off-site facility for the purposes of disposal, treatment, energy recovery, or recycling.
Transfer Operation1. All product loading into tank trucks and rail cars of liquid containing organic HAP from a transfer rack...
Transfer PumpAll pumps used to transport diisocyanate or HAP ABA that are not metering pumps.
Transfer Rack1. Collection of loading arms and loading hoses, at a single loading rack, that are used to fill tank trucks...
Transfer Rack Group 11. Transfer rack that loads more than 0.65 million liters/year of liquids that contain organic HAP with a...
Transfer Rack Group 2Transfer rack that does not meet the definition of a Group 1 transfer rack. [40 CFR 63.2550 (CFR 2013)]
Transfer Rack Reference Control TechnologyCombustion device, recapture device, or recovery device used to reduce organic hazardous air pollutants...
Transfer RNA1. A class of RNA having structures with triplet nucleotide sequences that are complementary to the triplet...
Transfer Station1. Refers to a facility where solid waste is transferred from collection vehicles to larger trucks or rail...
Transfer SystemStationary system for which the predominant function is to convey liquids or solid materials from one point...
Transfer UnitPhase I unit that transfers all or part of its Phase I emission reduction obligations to a control unit...
Transferases1. Enzymes which transfer a group from one compound to another compound.
TransfersShifts in money or resources from one part of the economy (e.g., a group of individuals, firms, or...
Transfer(s) of the Toxic Chemical in Wastes to Off-Site LocationsWastes sent to any off-site facility for the purposes of disposal, treatment, energy recovery, or recycling.
Transfers to Other Off-Site LocationsOff-site location to which your facility ships or transfers wastes containing the reported EPCRA Section 313...
Transfers to States & Local GovernmentsTransfers to States and Local Governments involves the transfer of funds or financial assistance from the...
Transfers (water)Exchange of water among willing buyers and sellers.
TransformTo use and entirely consume (except for trace quantities) a controlled substance in the manufacture of other...
Transform Continental MarginA feature defined by the transform fault that develops during continental rifting. These margins differ from...
Transform FaultA transform fault is a special variety of strike-slip fault that accommodates relative horizontal slip...
Transformation1. Acquisition by a cell of the property of uncontrolled growth.
Transformation Time, T 50Overall system response time to any step change in input, generally the average of the time to reach 50%...
Transformative Research1. Investigations that generate new knowledge, that brings about new ways of defining the world, and that has...
Transformed VariableA variable for which the attribute values have been systematically changed for the sake of data analysis.
Transformer1. An electromagnetic device that changes the voltage of alternating current electricity.
Transforming dataData transformation is a mathematical treatment which alters the measurement scale of the observations. Data...
Transgenic Animal ModelA disease in a transgenic animal with pathologic mechanisms sufficiently similar to those of a human disease...
Transgenic Crop1. Contains a gene or genes which have been artificially inserted instead of the plant acquiring the gene(s)...
Transgenic Laboratory Animal(Animal) having genetic material (DNA) from another species (designed to be used in laboratory work)...
Transgenic Plant1. (Plant) having genetic material (DNA) from another species. [Glossary: Potential Implications of Genomics...
transgressionThe spread or extension of the sea over land areas, and the consequent evidence of such advance; also, any...
Transhipment1. The continuous shipment of a controlled substance (e.g., chlorofluorocarbons), from a foreign state of...
TransientOccurring when the system is still changing with time; i.e., a steady state has not been attained. Most...
Transient ElectromagneticsAn electromagnetic surveying method in which the waveform of the transmitted signal is a pulse, step...
Transient Non-Community Water System1. A type of public water system that provides water in a place - such as a gas station or campground - where...
Transient Non-Community Water SystemsWater systems that are not community systems and serve 25 non-resident persons per day for 6 months or less...
Transient TracerChemical elements (often radioactive) or compounds that have finite lifetimes. Atmospheric testing of nuclear...
Transient Water System1. A non-community water system that does not serve 25 of the same nonresident persons per day for more than...
TransitMass transportation by bus, rail, or other conveyance which provides general or special service to the public...
Transit Project1. Undertaking to implement or modify a transit facility or transit-related program; purchase transit...
Transit TimeIn nutrient cycles, the average time that a substance remains in a particular form; ratio of biomass to...
Transit VehicleIncludes light, heavy, and commuter rail; motor bus; trolley bus; van pools; automated guideway; and...
Transit-Dependent PersonRefers to persons unable to operate automobiles or other motorized vehicles, or those who do not own...
Transition CowThe time in a cow's life from 2 months before, to 1 month after, her expected calving date.
Transition HousingBarns designed especially for transition cows, often including a maternity area.
Transition StrategyA multi-year plan to implement target architecture for all or part of an enterprise. Defines logical...
Transition zoneThe intervening area between distinct environments.
transitional beachesBeaches that collect and lose sand without net gain or loss.
Transitional Low-Emission VehicleAny light-duty vehicle or light-duty truck conforming to the applicable Transitional Low-Emission Vehicle...
Transition-Metal CatalysisA chemical reaction which is accelerated by any of the transition metals which are not consumed in the...
Transit-Oriented DevelopmentModerate- to higher-density development, located within easy walk of a major transit stop, generally with a...
TRANSITORY DOCUMENTSTransitory documents are documents of short-term interest which have no documentary or evidential value. They...
Translation InitiationTranslation Initiation consists of cellular and enzymatic reactions that instigate the process by which...
Translation Process1. A Translation Process consists of enzymatic reactions by which polypeptides are synthesized on ribosomes...
Translational ActivationTranslational Activation consists of cellular and enzymatic reactions that promote the process by which...
Translational RegulationThe control of gene expression at the level of protein translation.
Translational RepressionTranslational Repression consists of cellular and enzymatic reactions that inhibit the process by which...
Translational ResearchScientific research that helps make findings useful for everyday applications that improve human health and...
Translational ScienceField of investigation which seeks to understand the scientific and operational principles underlying each...
TranslocationThe transport of dissolved material within a plant from one part of the plant to another.
Transmembrane TransportAny subcellular or molecular process involved in translocation of a biological molecule across a cell...
Transmissibility1. The ability of the microorganism to survive, replicate, and pass through animate or inanimate matrixes and...
Transmissible GastroenteritisA condition of chronic gastroenteritis in adult pigs and fatal gastroenteritis in piglets caused by a...
Transmissible Mink EncephalopathyA naturally occurring subacute spongiform encephalopathy in commercially ranch-reared mink (Mustela vision)...
TransmissionThe gearbox that provides different gear ratios between the engine and the drive wheels including reverse...
Transmission Company Interconnect Metering and Regulating StationMetering and pressure regulating stations with an inlet pressure above 100 psig located at a point of...
Transmission Control Protocol/Internet Protocol1. TCP/IP (Transmission Control Protocol/Internet Protocol) is the basic communication language or protocol...
Transmission Electron Microscopy1. An electron microscopy imaging technique that is utilized to examine structural components of a sample by...
Transmission FacilitiesPipes used to transport raw or treated water to distribution facilities.
Transmission LineThe material medium or structure that forms all or part of a path from one place to another for directing the...
Transmission Lines1. Pipelines that transport raw water from its source to a water treatment plant. After treatment, water is...
transmission of infectionAny mode or mechanism by which an infectious agent is spread through the environment or to another person.
Transmission OverdriveOverdrive, in general, refers to a top gear ratio of less than one. This refers to a transmission gear ratio...
Transmission Pipeline1. A pipeline that conveys gas from a region where it is produced to a region where it is to be distributed.
Transmission-Distribution Transfer StationMetering-regulating station where a local distribution company takes part or all of the natural gas from a...

1,357 of 30,736 terms in Environment terminology (MLC-0121). Request the full dataset.