Environment terminology · MLC-0121

Environment terms: A (2,484)

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• Allocable CostCost which is attributable to a particular cost objective, such as a grant, project, service, or other...
• ALLOCABLE COSTS1. A cost is allowable to a particular cost objective if the goods or services involved are chargeable or...
• Allocate1. With regard to TR SO2 Group 1 allowances, the determination by the Administrator, State, or permitting...
• Allocation1. Partitioning the input or output flows of a unit process to the product of interest.
• Allocation Determination1. Determination by the permitting authority or the Administrator of the number of NOX allowances to be...
• Allocations1. That portion of a receiving water's loading capacity that is attributed to one of its existing or future...
• allochthonosDerived from outside a system, such as leaves of terrestrial plants that fall into a stream.
• AllochthonousDerived from outside a system, such as leaves of terrestrial plants that fall into a stream.
• Allochthonous MaterialDerived from outside a system, such as leaves of terrestrial plants that fall into a stream.
• AllomoneA chemical substance that induces a response in an individual of another species that is beneficial to the...
• All-or-None LawAn action that occurs either completely or not at all, such as the generation of an action potential by a...
• Allosteric InhibitorMolecules for which the change in shape affects the binding affinity or activity of the enzyme.
• Allosteric RegulationThe modification of the reactivity of enzymes by the binding of effectors to sites ( allosteric sites) on the...
• Allotment1. An amount representing a state's share of funds requested in the president's budget or appropriated by...
• Allowable Cost1. Costs that are eligible, reasonable, necessary, and allocable; are permitted under the appropriate Federal...
• ALLOWABLE COSTSEven though a proposal may involve an eligible applicant, eligible activity, and eligible purpose, grant...
• Allowable Emission1. Emissions of a pollutant from an affected source determined by taking into account the most stringent of...
• Allowable Hazardous Air Pollutant LossGallons of HAP that would have been lost from a source if the source was operating at the solvent loss factor...
• Allowable Nitrogen Oxides Emissions Rate1. For a unit, the most stringent State or federal NOX emission rate limit (in lb/MWhr or, if in lb/mmBtu...
• Allowable Sulfur Dioxide Emission Rate1. For a unit, the most stringent State or federal SO2 emission rate limit (in lb/MWhr or, if in lb/mmBtu...
• Allowance1. The amount of pollution a source is allowed to discharge during a given period of time.
• Allowance Allocation1. Initial crediting of an allowance by the Administrator to an Allowance Tracking System compliance account...
• Allowance CostAmount based on a percentage of the project’s allowable building cost, computed in accordance with appendix B.
• Allowance DeductionPermanent withdrawal of allowances by the Administrator from an Allowance Tracking System compliance account...
• Allowance ExpenditureNumber of allowances required for the production or import of regulated substances under this part subtracted...
• Allowance HeldAllowances recorded by the Administrator, or submitted to the Administrator for recordation in accordance...
• Allowance Management System1. System by which the Administrator records allocations, deductions, and transfers of TR NOX Annual...
• Allowance Management System Account1. Account in the Allowance Management System established by the Administrator for purposes of recording the...
• Allowance Recordation1. With regard to NOX allowances, the movement of NOX allowances by the Administrator from one NOX Allowance...
• Allowance ReserveAny bank of allowances established by the Administrator in the Allowance Tracking System pursuant to sections...
• Allowance Serial Number1. When referring to allowances, the unique identification number assigned to each allowance by the...
• Allowance Tracking System1. The Acid Rain Program system by which the Administrator allocates, records, deducts, and tracks allowances.
• Allowance Tracking System AccountAn account in the Allowance Tracking System established by the Administrator for purposes of allocating...
• Allowance Trading[A program whereby] sources can buy or sell allowances on the open market. Because the total number of...
• Allowance Transfer Deadline1. For a control period in 2015 or 2016, midnight of December 1, 2015 or December 1, 2016, respectively, or...
• Allowed ProcedureProcedures that we either specify in this part 1065 or in the standard-setting part or approve under §...
• AlloyMixture containing mostly metals. For example, brass is an alloy of copper and zinc. Steel contains iron and...
• Alloy FurnaceAny furnace used to melt alloys or to produce zinc that contains alloys.
• Alloying and CastingMixing molten aluminum into alloys or casting into ingots
• AllozymeA form of an enzyme that differs in amino acid sequence from other forms of the same enzyme and is encoded by...
• All-Terrain Vehicle1. Land-based or amphibious nonroad vehicle that meets the criteria listed in paragraph (1) of this...
• Alluvial1. Relating to and/or sand deposited by flowing water.
• Alluvial AquiferThe alluvial aquifer is composed of unconsolidated sediments (silt, sand, gravel, cobbles) deposited by...
• Alluvial Fan1. A landscape feature whose surface is shaped like an open fan or a segment of a cone and is formed by the...
• Alluvium1. Unconsolidated material (sediment) deposited by flowing water.
• Along-Slope Wind SystemA closed, thermally driven diurnal mountain wind circulation whose lower branch blows up or down the sloping...
• AlopeciaBaldness; absence of hair from skin areas where it is usually present
• Alpha, (α)The tolerated probability of a "false positive" (i.e., Type I error). See False Positive. {ORD} {OW/EAD}...
• Alpha AnimalIn animal behavior, the individual that takes a lead role and occupies the dominant position in a group.
• Alpha Diversityfor a sample representing a community regarded as homogeneous (despite its internal pattern)
• Alpha ErrorThe tolerated probability of a “false positive” (i.e., Type I error) (ORD).
• Alpha Methyl Styrene Acrylonitrile ResinCopolymers consisting primarily of alpha methyl styrene and acrylonitrile.
• Alpha Particle1. Two neutrons and two protons bound as a single particle that is emitted from the nucleus of certain...
• ALPHABETIC-SUBJECT FILING SYSTEMA classification system in which subjects are arranged in alphabetical order regardless of their relationship...
• ALPHANUMERIC FILING SYSTEMA classification system in which letters are assigned to main divisions and numbers to subdivisions. For...
• AlphavirusA genus of Togaviridae, also known as Group A arboviruses, serologically related to each other but not to...
• Alpine glacial lakeLakes formed by glacial activity at high elevation and above the tree line.
• AlprazolamA triazolobenzodiazepine compound with antianxiety and sedative-hypnotic actions, that is efficacious in the...
• Altamaha-St. MarysThe coastal drainage and associated waters from and including the Altamaha River Basin to the St. Johns River...
• AltenueneAn Alternaria mycotoxin metabolite. A poisonous substance generated by certain fungi.
• AlterationRearranging molecules with isomerization and catalytic reforming
• Altered DischargeAny discharge other than a current discharge or improved discharge, as defined in this regulation.
• Altered EcosystemA changed ecosystem, generally refers to changes brought about by human activities
• Altered WetlandA wetland’s characteristics evolve when hydrologic conditions cause the water table to saturate or inundate...
• Alternaria spp.Alternaria species may be significant as potential contaminants of food. Alternaria infects the plant in the...
• AlternariolAn Alternaria mycotoxin. A poisonous substance generated by certain fungi.
• Alternate CAIR Designated Representative1. For a CAIR NOX source and each CAIR NOX unit at the source, the natural person who is authorized by the...
• Alternate Concentration LimitA site-specific ground water contaminant limit approved by the regulator and incorporated into the facility’s...
• Alternate Designated Representative1. For a TR NOX Annual source and each TR NOX Annual unit at the source, the natural person who is authorized...
• Alternate FormatsAlternate formats usable by people with disabilities may include, but are not limited to, Braille, ASCII...
• Alternate HostOne of the two dissimilar plants infected by a heterocyclic fungus, i.e., rust fungi that use two hosts to...
• Alternate Listing IDUnique identifier for a listed water, if different from the Assessment Unit ID.
• Alternate MethodAny method of sampling and analyzing for an air or water pollutant that is not a reference or equivalent...
• Alternate MethodsDifferent means of providing information, including product documentation, to people with disabilities...
• Alternate ProcedureProcedures allowed under § 1065.10(c)(7).
• Alternate Recovery StandardGroup of isotopically labeled compounds that is not otherwise designated in this method for quality control...
• Alternate SplicingAlternate Splicing is a process in which multiple protein isoforms or products are generated from a single...
• Alternate Ways to CommentSome federal agencies provide Regulations.gov users with alternate ways to submit a comment. This information...
• Alternating Current1. An electric current that reverses its direction (positive/negative values) at regular intervals.
• Alternation of GenerationsA life cycle in which a multicellular diploid stage is followed by a haploid stage, and so on; found in land...
• Alternative Adsorption MediaTwo types of natural material that have shown particular promise are seaweed and seafood waste. In this...
• Alternative Building TechnologyNon-traditional materials used to build homes that are less expenseive, more energy efficient, and serve...
• Alternative ComplianceA policy that allows facilities to choose among methods for achieving emission-reduction or risk-reduction...
• Alternative CompoundAny chemical, product substitute, or alternative manufacturing process, whether existing or new, intended for...
• Alternative Concentration LimitsFor purposes of TSDF ground water monitoring, hazardous constituent limits established by the EPA Regional...
• Alternative Contemporaneous Annual Emission LimitationMaximum allowable NOX emission rate (on a lb/mmBtu, annual average basis) assigned to an individual unit in a...
• Alternative CropSelect crops that may be suitable for small scale farming by limited-resource farmers and small landowners.
• Alternative Disinfection1. Includes ozonation, chlorine dioxide, ultraviolet radiation, peracetic acid, and electron beam irridation...
• Alternative Dispute Resolution1. A technique in which a neutral party helps organize negotiations, facilitates deliberations, and/or...
• Alternative Effluent Limitation1. All effluent limitations or standards of performance for the control of the thermal component of any...
• Alternative Emission LimitationConditions established pursuant to sections 112(i)(5) or 112(i)(6) of the Act by the Administrator or by a...
• Alternative Emission StandardAn alternative means of emission limitation that, after notice and opportunity for public comment, has been...
• Alternative Energy1. Energy derived from nontraditional sources (e.g., compressed natural gas, solar, hydroelectric, wind).
• Alternative Energy ScenarioA plausible prediction for the future of alternative energy
• Alternative Energy SourceEnergy derived from nontraditional sources (e.g., compressed natural gas, solar, hydroelectric, wind).
• Alternative evaluationA systematic evaluation of alternative ways to accomplish a task that reviews the cost, performance, and...
• Alternative FarmingProduction methods other than energy- and chemical intensive one-crop (monoculture) farming. Alternatives...
• Alternative Filtration TechnologyPrimarily geared to small systems drinking water and include: reverse osmosis, filtration, microfiltration...
• Alternative Fuel1. Any of the following:(1) Methanol.(2) Denatured ethanol.(3) Other alcohols.(4) A mixture containing at...
• Alternative Fueled EngineEngines which use substitutes for traditional liquid, oil-derived motor vehicle fuels like gasoline and...
• Alternative FuelsSubstitutes for traditional liquid, oil-derived motor vehicle fuels like gasoline and diesel. Includes...
• Alternative HypothesisHypothesis, to be adopted if the null hypothesis proves implausible, in which exposure is associated with...
• Alternative identifiersSecondary identifiers from either a legacy system or other program outside the EIS stored by the EIS. These...
• Alternative Land-Use ScenarioA plausible prediction of future land-uses
• Alternative LivestockAnimal species that are non-conventional to commercial farm production, such as heritage and rare breed...
• Alternative MaterialConstruction materials that are made of non-traditional substances.
• Alternative Method1. Any method of sampling and analyzing for an air pollutant that is not a reference or equivalent method but...
• Alternative Microbial InactivationInnovative technology to achieve inactivation of microbiological contaminants.
• Alternative ModelImportant in IEM model development to assess effects of conceptual model uncertainty. Alternative...
• Alternative Monitoring SystemSystem or a component of a system designed to provide direct or indirect data of mass emissions per time...
• Alternative Operating Scenario1. Scenario authorized in a part 70 permit that involves a change at the part 70 source for a particular...
• Alternative Remedial Contract Strategy ContractorsGovernment contractors who provide project management and technical services to support remedial response...
• Alternative requirementIndicates that a facility has more than one option to meet the effluent limitations guidelines and standards.
• Alternative ScenarioAlternative scenarios are not intended to predict the future. Rather, they present a series of plausible...
• Alternative Septic System1. A wastewater treatment system that includes components different from those typically used in a...
• Alternative TechnologyControl technology for reducing NOX emissions that is outside the scope of the definition of low NOX burner...
• Alternative Test Method1. Any method of sampling and analyzing for an air pollutant that is not a test method in this chapter and...
• Alternative Wastewater Treatment TechnologyProven wastewater treatment processes and techniques which provide for the reclaiming and reuse of water...
• Alternative-Fuel Vehicle1. A vehicle designed to operate on an alternative fuel (e.g., compressed natural gas, methane blend...
• Alternatives AnalysisDefinition and comparison of viable alternatives to fulfill business and information management requirements...
• AlternatorAn electric generator for producing alternating current.
• Alternator/Generator Efficiency1. Ratio of the electrical power output from the alternator/generator to the mechanical power input to the...
• Alternator/Generator Input HorsepowerMechanical horsepower input to the main alternator or generator of a locomotive. For the purpose of...
• AlterniaOne of the most common molds most often found on meat and poultry.
• AltertoxinsAn Alternaria mycotoxin. A poisonous substance generated by certain fungi.
• Altimeter1. An active instrument (see active system) used to measure the altitude of an object above a fixed level...
• Altitude Performance AdjustmentAdjustments or modifications made to vehicle, engine, or emission control functions in order to improve...
• Altitudinal MigrationA vertical pattern of migration in which populations that breed in the alpine or subalpine zones in summer...
• alumA double sulphate formed of aluminum and some other element (esp. an alkali metal) or of aluminum. It has 24...
• alum (aluminum sulfate) treatmentAlum or aluminum sulfate is an acid that is commonly used as a poultry litter treatment. Available in either...
• Aluminum1. A metal that is toxic to trees and fish.
• Aluminum Basis MaterialAluminum, aluminum alloys and aluminum coated steels which are processed in coil coating.
• Aluminum CanContainers and packaging such as beverage cans or food and other nonfood cans. Examples of recycling include...
• Aluminum Cansrefers to containers and packaging such as beverage cans or food and other nonfood cans. Examples of...
• Aluminum CastingRemelting of aluminum or an aluminum alloy to form a cast intermediate or final product by pouring or forcing...
• Aluminum EquivalentAmount of aluminum which can be produced from a Mg of anodes produced by an anode bake plant as determined by...
• Aluminum FormingSet of manufacturing operations in which aluminum and aluminum alloys are made into semifinished products by...
• Aluminum FoundryFacility that melts aluminum and pours molten aluminum into molds to manufacture aluminum castings (except...
• Aluminum Foundry Hazardous Air PollutantAny compound of the following metals: beryllium, cadmium, lead, manganese, or nickel, or any of these metals...
• Aluminum Processing FacilityManufacturing plant which either uses the Hall-Heroult process of smelting the aluminum oxide to release pure...
• Aluminum ProductionManufacturing operations for producing or recovering aluminum from raw materials or scrap
• Aluminum ScrapFragments of aluminum stock removed during manufacturing (i.e., machining), manufactured aluminum articles or...
• Aluminum Scrap ChipSmall, uniformly-sized, unpainted pieces of aluminum scrap, typically below 11/4 inches in any dimension...
• Aluminum Scrap ShredderHigh speed or low speed unit that crushes, grinds, granulates, shears or breaks aluminum scrap into a more...
• Aluminum Scrap ShreddingUnit that crushes, grinds, or breaks aluminum scrap into a more uniform size prior to processing or charging...
• alvarNaturally open areas of thin soil over limestone or marble bedrock, which host a distinctive vegetation...
• Always-Controlled Work Station1. Work station associated with a dryer from which the exhaust is delivered to a control device, with no...
• Amalgam Process WastewaterAny wastewater generated and discharged by a dental discharger through the practice of dentistry that may...
• Amalgam SeparatorCollection device designed to capture and remove dental amalgam from the amalgam process wastewater of a...
• AmalgamationThe dissolving or blending of a metal (commonly gold and silver) in mercury to separate it from its parent...
• ambient1. Any unconfined portion of the atmosphere; open air; outside surrounding air.
• Ambient Air1. Any unconfined portion of the atmosphere: open air, surrounding air.
• Ambient Air Measurement InstrumentationTools that measure, monitor, and charaterize air pollutant concentrations and transport across urban and...
• Ambient Air Monitoring1. Process of collecting outdoor air samples to determine how much of an air pollutant is present at a...
• Ambient Air PollutantPollutant in the air that surrounds us.
• Ambient Air Quality1. The quality of any unconfined portion of the atmosphere: open air, surrounding air.
• Ambient Ammonia MonitorUtilization of a wide range of analytical methods including direct detection by spectroscopic techniques or...
• Ambient Aquatic Life Advisory ConcentrationEPA's advisory concentration limit for acute or chronic toxicity to aquatic organisms as established under...
• Ambient ContaminationNaturally occurring constituents in groundwater (i.e., constituents that are not due to ore processing) that...
• Ambient DataA forensic term which means data that may be stored in non-traditional, not easily accessible places and...
• Ambient ExposureContact with a substance by swallowing, breathing, or touching the skin or eyes in the average presence of a...
• Ambient Fine Particle SensorA monitor with sensors that monitor the mass or chemical composition of fine particulate matter in ambient...
• Ambient Fine Particulate MonitorMonitors the mass or chemical composition of fine particulate matter in ambient air.
• Ambient Measurement1. A measurement of the concentration of a substance or pollutant within the immediate environs of an...
• Ambient MediumMaterial surrounding or contacting an organism (e.g., outdoor air, indoor air, water, or soil) through which...
• Ambient monitoringMonitoring within natural systems (e.g., lakes, rivers, estuaries, wetlands) to determine existing conditions.
• Ambient Temperature1. (Am-Bee-Ent) Temperature of the surrounding air (or other medium). For example, temperature of the room...
• Ambient Water CriterionThat concentration of a toxic pollutant in a navigable water that, based upon available data, will not result...
• Ambient Water QualityNatural concentration of water quality constituents prior to mixing of either point or nonpoint source load...
• Ambient Water Quality CriteriaEPA's maximum acute or chronic toxicity concentrations for protection of aquatic life and its uses as...
• Ambient Waters1. Waterbodies in the environment in their current state (i.e., polluted or unpolluted).
• AmbulanceVehicle used for emergency medical care that provides all of the following: (1) A driver’s compartment. (2) A...
• Ambush PredatorA predator that hides and waits for prey to pass in close proximity rather than actively hunting for it.
• AmebiasisA parasitic infectious disorder caused by amoebas. The parasite may cause colitis which is manifested with...
• AmebicideAgent which is destructive to amebae, especially the parasitic species causing amebiasis in man and animal...
• AmendmentA formal document revising the provisions of an insurance policy.
• Amendment ReviewReview of any application requiring Agency approval to amend the registration of a currently registered...
• AmensalismA type of symbiosis where two (or more) organisms from different species live in close proximity to one...
• American Conference of Governmental and Industrial Hygienists' Short-Term Exposure LimitA 15-min time-weighted-average exposure which should not be exceeded at any time during a workday. See TLV®...
• American Conference of Governmental Industrial Hygienists' Threshold Limit ValueThe three types of TLV are time-weighted average (TWA), short-term exposure limit (STEL) and ceiling (C)...
• American IndianA person having origins in any of the original peoples of North and South America (including Central America)...
• American Indian Off-reservation Trust Lands1. Census Bureau-defined areas for which the United States holds title in trust for the benefit of a tribe or...
• American Indian or Alaskan Native1. Person having origins in any of the original peoples of North America, and who maintains cultural...
• American Indian ReservationsCensus Bureau-defined areas set aside by the federal government for use by tribes...
• American Industrial Hygiene Association's Emergenct Response Planning GuidelineThe ERPG-1 is the maximum airborne concentration below which it is believed nearly all individuals could be...
• American National Standards Institute1. ANSI is a nonprofit organization that administers and coordinates the U.S. voluntary standardization and...
• American National Standards Institute/International Organization for Standardization 14001:2004American National Standards Institute/International Organization for Standardization. An American national...
• American Recovery and Reinvestment ActMaking supplemental appropriations for job preservation and creation, infrastructure investment, energy...
• American Society for Testing and Materials1. ASTM is a member-based organization that develops a wide range of voluntary standards. It promulgates...
• American Society of Heating, Refrigerating and Air-Conditioning EngineersASHRAE is an international organization that establishes standards for the uniform testing and rating of...
• American Standard Code for Information Interchange1. A binary code representing each letter, number, or other symbol with a unique 7-bit code. See also CODE...
• Americans With Disabilities ActTo establish a clear and comprehensive prohibition of discrimination on the basis of disability.
• AmidesOrganic compounds containing the -CO-NH2 radical. Amides are derived from acids by replacement of -OH by -NH2...
• AminesAn organic compound containing a basic (alkaline) nitrogen atom. Amines may be primary (R-NH2), secondary...
• Amino Acid BiosynthesisAmino Acid Biosynthesis consists of cellular enzymatic reactions that produce amino acids, organic compounds...
• Amino Acid DegradationThe chemical reactions and pathways which breakdown amino acids, consisting of the removal of the alpha amino...
• Amino Acid Receptor BindingA process that involves the binding of any member of the group of amino acid neurotransmitters, including...
• Amino Acid Sequence1. The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary...
• Amino Acid SynthesisThe biochemical reactions which make amino acids from other substances
• Amino Acid Synthesis InhibitionAmino Acid Synthesis Inhibition involves interference with, or restraint of, enzymatic formation of organic...
• Amino Acids1. Any organic compounds containing amino (-NH2) and carboxyl (-COOH) groups. In biochemistry, used to refer...
• Amino ResinThermoset resin produced through the reaction of formaldehyde, or a formaldehyde containing solution (e.g...
• Amino SugarsSUGARS containing an amino group. GLYCOSYLATION of other compounds with these amino sugars results in...
• Amino/Phenolic ResinOne or both of the following: (1) Amino resin; or(2) Phenolic resin.
• AmitosisAn unusual form of cell division in which the nucleus cleaves without change in its component structure (such...
• AmlodipineA long-acting dihydropyridine calcium channel blocker. It is effective in the treatment of angina pectoris...
• Ammonia1. An inorganic nitrogen compound. In water, ammonia levels in excess of the recommended limits may harm...
• Ammonia Air-Surface ExchangeExchange of atmospheric ammonia with the Earth's surface.
• Ammonia (as Nitrogen)1. Ammonia measured as nitrogen.
• Ammonia AssimilationAmmonia assimilation into glutamate by bacteria
• Ammonia Assimilation CycleThe pathway by which ammonia is processed and incorporated into a cell. In an energy-rich...
• Ammonia Continuous Emission MonitorContinually monitors the concentration, fluxes, and emission rates of ammonia in ambient air. [Adapted from...
• Ammonia Dry DepositionThe ammonia flux directly from the air to the surface. The formulations for dry deposition processes are...
• Ammonia EmissionAmmonia is produced as a by-product of the microbial decomposition of the organic nitrogen compounds in...
• Ammonia StrippingThe removal of ammonia with equilibrium vapor pressure at ambient temperatures.
• Ammonia SynthesisHaber process using nitrogen and hydrogen gases and a catalyst.
• Ammonia VolatilizationA process that commonly takes place when nitrogen is in an organic form known as urea. Urea can originate...
• Ammonia-Oxidizing BacteriaBacteria that convert of ammonia to nitrite
• AmmonificationThe production of ammonia from the decomposition of organic matter.
• AmmoniumOne form of nitrogen that is usable by plants.
• Ammonium CompoundsInorganic compounds that include a positively charged tetrahedral nitrogen (ammonium ion) as part of their...
• Ammonium Nitrate - SpecifiedInformation related to the registration of ammonium nitrate facilities, purchasers, and the regulation of...
• Ammonium PersulfateAmmonium persulfate is a white crystalline solid. A strong oxidizing agent. Does not burn readily, but may...
• Ammonium Sulfate DryerUnit or vessel into which ammonium sulfate is charged for the purpose of reducing the moisture content of the...
• Ammonium Sulfate Feed Material StreamSulfuric acid feed stream to the reactor/crystallizer for synthetic and coke oven by-product ammonium sulfate...
• Ammonium Sulfate Manufacturing PlantAny plant which produces ammonium sulfate.
• AmmoxidationNitrile production (often acrylonitrile) using alkenes, ammonia and oxygen as the starting materials.
• Amniotic FluidA clear, yellowish liquid that envelopes the fetus inside the sac of amnion. In the first trimester, it is...
• AmoebaA genus of ameboid protozoa. Characteristics include a vesicular nucleus and the formation of several...
• AmorphousWithout definite form, not crystallized
• Amorphous PolymerPolymeric substance which does not have a regularly-ordered structure.
• Amorphous SemiconductorA non-crystalline semiconductor material that has no long-range order.
• Amorphous SiliconThin-film, silicon photovoltaic cell having no crystalline structure. Manufactured by depositing layers of...
• Amosite1. Brown asbestos
• Ampelopsis brevipedunculataPorcelain-berry is a deciduous, woody, perennial vine. It twines with the help of non-adhesive tendrils that...
• Amperage(AM-purr-age) The strength of an electric current measured in amperes. The amount of electric current flow...
• Ampere(AM-peer) The unit used to measure current strength. The current produced by electromotive force of one volt...
• Amperometric(am-PURR-o-MET-rick) Based on the electric current that flows between two electrodes in a solution.
• Amperometric TitrationA means of measuring concentrations of certain substances in water (such as strong oxidizers) based on the...
• AmphibiaVertebrates such as frogs, toads, newts and salamanders that live in a semiaquatic environment.
• Amphibian1. A cold-blooded vertebrate that lives in water and on land. Amphibians' aquatic, gill-breathing larval...
• Amphibious VehicleVehicle with wheels or tracks that is designed primarily for operation on land and secondarily for operation...
• Amphibole1. Group of double chain silicate minerals.
• Amphipod1. A small, shrimp-like crustacean.
• amplification1. An increase in the number of copies of a specific DNA fragment; can be in vivo or in vitro.
• Amplification HostA host in which disease agents, such as viruses, increase in number.
• AmplitudeThe maximum departure of a wave from the average value.
• Amplitude ModulationA type of transmission used in either the standard radio broadcast band at 535-1705 kilohertz, shortwave...
• Amprometric TitrationA way of measuring concentrations of certain substances in water using an electric current that flows during...
• AmpuleAirtight vial made of glass, plastic, metal, or any combination of these materials.
• Amputation StumpThe part of a limb or tail following amputation that is proximal to the amputated section.
• AmputeeA person who has lost all or part of a limb due to surgical removal.
• AMS/EPA Regulatory ModelEPA’s preferred model for calculating air pollutant concentrations from most source types. AERMOD simulates...
• Amyloid Fibril InteractionAmyloid Fibril Interaction involves temporary non-covalent binding of a molecule through intermolecular...
• AmyloidogenesisAmyloidogenesis is the formation or growth of amyloid structures, implicated in many human diseases including...
• AnabaenaA genus of cyanobacteria consisting of trichomes that are untapered with conspicuous constrictions at...
• Anabranching Channel1. A distributary channel that departs from the main channel, sometimes running parallel to it for several...
• AnadromousMigrating up rivers from the sea to breed in fresh water.
• Anadromous AnimalReferring to the life cycle of fishes, such as salmon, in which adults travel upriver from the sea to breed...
• Anadromous fish1. Fish that spend their adult lives in salt water but must migrate to freshwater tributaries to spawn. For...
• Anaerobic1. A biological process which occurs in the absence of oxygen.
• Anaerobic Bacteria1. Bacteria that only grow in the absence of free elemental oxygen.
• Anaerobic Biodegradation"The degradation of compounds by microorganisms in the absence of oxygen." - National Research Council, 1993
• Anaerobic Biodegradation TechnologyA biological treatment in which microorganisms metabolize biodegradable organics in aqueous waste in an...
• Anaerobic Decomposition1. Reduction of the net energy level and change in chemical composition of organic matter caused by...
• Anaerobic DigesterSystem where wastes are collected and anaerobically digested in large containment vessels or covered lagoons...
• Anaerobic Digestion1. The degradation of organic matter including manure brought about through the action of microorganisms in...
• Anaerobic Digestion System1. Include but are not limited to covered lagoon, complete mix, plug flow, and fixed film digesters.
• Anaerobic HydrolysisEnzyme mediated transformation of complex organic compounds into simple compounds.
• Anaerobic Lagoon1. A liquid-based manure management system, characterized by waste residing in water to a depth of at least...
• Anaerobic MicroorganismAnaerobic organisms use substances other than oxygen as electron acceptors when degradating organic...
• Anaerobic organismOrganism that does not need oxygen to stay alive.
• Anaerobic Process1. Anaerobic processes are used for treating wastewater with high concentrations of biodegradable organic...
• Anaerobic RemediationUsing microbes under anaerobic conditions to treat wastes
• Anaerobic Respiration1. "The process whereby microorganisms use a chemical other than oxygen as an electron acceptor. Common...
• Anaerobic Suspended GrowthBiodegradable organic compounds in wastewater are consumed by microorganisms in the absence of oxygen. The...
• AnagenesisThe evolutionary process whereby one species evolves into another without any splitting of the phylogenetic...
• Anal CanalThe terminal segment of the large intestine, beginning from the ampulla of the rectum and ending at the anus.
• Anal DisordersA non-neoplastic or neoplastic disorder that affects the anal canal or anal margin. Representative examples...
• Anal FinThe single fin situated on the ventral midline of a fish, behind the anus, and anterior to the caudal fin.
• AnalgesicCompounds capable of relieving pain without the loss of consciousness.
• Analog1. The readout of an instrument by a pointer (or other indicating means) against a dial or scale.
• Analog recordingData are represented as a continuous record of physical variables instead of discrete values, as in digital...
• Analog SignalA signaling method that uses continuous changes in the amplitude or frequency of a radio transmission to...
• Analog TransmissionAnalog is "shorthand" for the word analogous, which means similar to. The signal being sent - voice or video...
• Analogous StructureA body part that serves the same function in different organisms, but differs in structure and embryological...
• Analogy1. A comparison of two things, based on their similarity in one or more respects. In stressor identification...
• Analysis1. A systematic approach to problem solving. Complex problems are made simpler by separating them into more...
• Analysis by ApplicationGeneral systematic study by scientific discipline.
• Analysis of CovarianceA method for analyzing the differences in the means of two or more groups of cases while taking account of...
• Analysis of Deviance TablesIn the tables for the Nested Models, the value for "Full Model" is incorrect. Ignore that value and the...
• Analysis of EvidenceStudy and examination of evidence in whatever depth is necessary to ensure its reliability and integrity.
• Analysis of existing dataThe process of gathering and summarizing existing data from various sources to provide current information on...
• Analysis of Variance1. A method for analyzing the differences in the means of two or more groups of cases.
• analysis planA plan that provides all the details of exactly how each part of the risk assessment will be performed. It...
• Analyst1. Any individual who performs analytical methods and associated procedures and who is the one responsible...
• analyte1. The element, ion, or compound that an analysis seeks to identify; the element of interest.
• analytic epidemiology1. The aspect of epidemiology concerned with the search for health-related causes and effects. Uses...
• Analytic StudyComparative study intended to identify and quantify associations, test hypotheses, and identify causes. Two...
• Analytical Batch1. Environmental samples that are prepared and/or analyzed together with the same process and personnel and...
• analytical epidemiologic study1. An evaluation of the association between exposure to hazardous substances and disease by testing...
• Analytical ModelA model that can be solved mathematically in terms of analytical functions. For example, some models that are...
• Analytical Model DevelopmentDevelopment of models that can be solved mathematically in closed form. For example, some model algorithms...
• Analytical ModelsModels that can be solved mathematically in terms of analytical functions. For example, some models that are...
• Analytical Response1. A numerical observation whose magnitude is related to the amount or concentration of the analyte in a...
• Analytical Result1. A formal numerical estimate of the concentration of an analyte in a sample, which is obtained by carrying...
• Analytical SensitivityThe sample-specific lowest concentration of asbestos the laboratory can detect for a given method.
• Analytical SubstanceSubstances organized by function in analytical chemistry
• Analytical uncertainty propagationExamining how uncertainty in individual parameters affects the overall uncertainty of the exposure assessment.
• Analyzer1. A device which conducts periodic or continuous measurement of some factor such as chlorine, fluoride or...
• Analyzer Operated SimultaneouslyTwo or more collocated samplers or analyzers are operated concurrently with no significant difference in the...
• AnamorphThe asexual form of a fungus.
• AnaphaseThe third phase of mitosis during which the two groups of daughter chromosomes separate and move along the...
• AnaphylactoidResembling an unusual or exaggerated allergic reaction to foreign protein or other substances
• AnaphylaxisImmediate and severe allergic reaction to a substance (e.g. food or drugs). Symptoms of anaphylaxis include...
• Anaplasma .A genus of gram-negative bacteria whose organisms are obligate parasites of vertebrates. Species are...
• Anatomical ResponseMeasure of a change in or damage to the anatomy of a species as a result of exposure to a contaminant.
• AnatomyA branch of biology dealing with the structure of organisms.
• AncestryRefers to a person's self-identification of heritage, ethnic origin, descent, or close identification to an...
• AnchorsAnchors are items that serve as reference points from which other items in the series or other points in the...
• Ancillary Activity1. Boilers and incinerators (not used to comply with the emission limits in Tables 1 through 7 to this...
• Ancillary dataData collected from studies within EMAP but not used directly in the computation of an indicator. Ancillary...
• Ancillary Equipment1. Equipment used in conjunction with or that serve a refinery process unit. Ancillary equipment includes...
• Ancillary Hazardous Waste EquipmentAny device including, but not limited to, such devices as piping, fittings, flanges, valves, and pumps, that...
• Ancillary materialMaterial input that is used by the unit process producing the product, but is not used directly in the...
• Ancillary Operation1. All of the operations specific to battery manufacturing and not included specifically within anode or...
• Ancillary Service1. Services that assist the grid operator in maintaining system balance. These include regulation and the...
• Anderson-Darling Goodness of FitThe Anderson-Darling test is used to test if a sample of data came from a population with a specific...
• Anderson-Darling Goodness of Fit MethodThe Anderson-Darling test is used to test if a sample of data came from a population with a specific...
• Anderson-Darling goodness of fit testThe Anderson-Darling test is used to test if a sample of data came from a population with a specific...
• AndisolsThe central concept of an Andisol is that of a soil developing in volcanic ejecta (such as volcanic ash...
• Androgen Activity InductionAndrogen Activity Induction involves initiation of the biological function of biochemical substances...
• Androgen Activity InhibitionAndrogen Activity Inhibition involves interference with, such as receptor binding, or restraint of the...
• Androgen Metabolism ProcessAndrogen Metabolism consists of diverse biochemical reactions in the adrenal cortex that produce 19-carbon...
• Androgens1. Compounds that interact with androgen receptors in target tissues to bring about the effects similar to...
• AndroscogginThe Androscoggin River Basin, including part of Merrymeeting Bay. Maine, New Hampshire. Area = 3530 sq.mi.
• Anecdotal Data1. Data based on the description of individual cases rather than controlled studies.
• Anecdotal InformationInformation based on descriptions of individual cases rather than on controlled studies.
• AnemochoryThe dispersal of seeds, fruits, or other plant parts by wind.
• AnemometerDevice to measure the wind speed.
• Aneroid blood pressure cuffsnon-liquid blood pressure cuffs.
• Angiogenic SwitchLoss of the balance between stimulation and inhibition of new blood vessel growth. A required early step in...
• Angiotensin Converting Enzyme InhibitorA class of drugs whose main indications are the treatment of hypertension and heart failure. They exert their...
• Angiotensin II Receptor BindingA process that involves the non-covalent binding of angiotensin II to an angiotensin receptor family protein...
• Angiotensin Receptor AntagonistAgents that antagonize ANGIOTENSIN RECEPTORS. Many drugs in this class specifically target the ANGIOTENSIN...
• Angiotensin-Converting Enzyme 21. Transmembrane glycoprotein with an extracellular catalytic domain which functions as a carboxypeptidase...
• Angle of reposeThe maximum slope or angle at which a material, such as soil or loose rock, remains stable (stable angle).
• AnglerSomeone who fishes recreationally with a hook, line and rod.
• Anhydrous AmmoniaA fertilizer used to provide nitrogen for crop production. The product, stored under high pressure as a...
• Anhydrous EthanolEthanol that contains no more than 1.0 volume percent water.
• Anhydrous ProductTheoretical product that would result if all water were removed from the actual product.
• Animal Abdomen1. In higher animals, the portion of the body that contains the intestines and other viscera other than the...
• Animal AbortionExplusion of the embryo or fetus before it is viable outside of the uterus without deliberate interference...
• Animal Accessory Sex GlandGlands that empty their secretions into the reproductive tract
• Animal ActionAn action or process performed by a non-human animal.
• Animal Adipose TissueDense irregular connective tissue, which predominantly consists of adipocytes.
• Animal Adrenal Gland1. Paired glands situated in the retroperitoneal tissues at the superior pole of each kidney.
• Animal AggressionThreatening behavior or attacks by one animal on another animal
• Animal AllantoisA vascularized extra-embryonic membrane of amniote embryos that forms as a narrow outgrowth of the hind...
• Animal AmnionA non-vascular extra-embryonic membrane of amniote embryos that forms a fluid-filled cavity surrounding the...
• Animal Amniotic FluidThe liquid that envelopes the fetus inside the sac of amnion.
• Animal Anal GlandA pair of anal glands or sacs, located on either side of the anus, that produce and store a dark...
• Animal AntennaOne of the paired, flexible, and jointed sensory appendages on the head of a crustacean, an insect, or a...
• Animal Antennal LobeRefers to the lobe of the brain receiving input from the antenna.
• Animal AnthraxA disease of mammals and humans caused by a spore-forming bacterium called Bacillus anthracis. Anthrax has an...
• Animal AnusThe posterior opening of the digestive tract, through which waste products of digestion are released.
• Animal AppendageAny body part that extends from the main axis or trunk or cephalized portion of an organism.
• Animal BabesiosisA group of tick-borne diseases of mammals including zoonoses in humans. They are caused by protozoa of the...
• Animal Bacterial DiseasesInfectious diseases in animals caused by bacteria
• Animal BehaviorThe observable response an animal makes to any situation. [NLM Medical Subject Headings, (MeSH]]
• Animal BileYellow-brown to greenish liquid secreted by the liver and stored in the gallbladder before excretion by way...
• Animal Biliary TractThe animal bile duct and the gallbladder
• Animal BloodA circulating tissue composed of a fluid portion (plasma) with suspended formed elements (red blood cells...
• Animal Blood VesselAny of the tubular vessels conveying the blood
• Animal Bodily SecretionEndogenous substances produced through the activity of intact cells of glands, tissues, or organs.
• Animal Body CavityMain structure that surrounds and protects the life-sustaining organs of an animal
• Animal Body FluidLiquid components of living animals
• Animal Body Part by Animal TypeNames for animal body parts vary by animal order and family classifications. Many names are unique to that...
• Animal Body RegionGeneral term for regions of an animal's body across many animal orders and families
• Animal BoneA specialized connective tissue that is the main constituent of the skeleton.
• Animal Bone MarrowThe soft tissue filling the cavities of bones.
• Animal Borne FungusFungus that is a parasite on animals
• Animal Borrelia burgdorferi Infection1. An infectious disease caused by the spirochete Borrelia burgdorferi. Early manifestations of infection may...
• Animal BrainFor vertebrates, the part of central nervous system that is contained within the skull (cranium).
• Animal Bulbourethral GlandGlands situated on each side of the prostate that secrete a fluid component of the seminal fluid into the...
• Animal CampylobacteriosisA bacterial infection with organisms of the genus Campylobacter.
• Animal Cardiovascular SystemThe heart and the blood vessels by which blood is pumped and circulated through the body.
• Animal CartilageA usually translucent somewhat elastic tissue that composes most of the skeleton of vertebrate embryos and...
• Animal CellThe smallest units of living structure capable of independent existence, composed of a membrane-enclosed mass...
• Animal Central Nervous SystemThe part of the nervous system made up of the brain, spinal cord, and spinal nerves. These serve as the main...
• Animal CerebrumAn enlarged anterior or upper part of the brain; especially: the expanded anterior portion of the brain that...
• Animal CharacteristicFeature which characterizes a non-human animal.
• Animal Circulatory SystemThe heart and the blood vessels by which blood is pumped and circulated throughout the body
• Animal ColostrumThe first milk from mammal mothers' bodies produced directly after birth; it contains antibodies valuable to...
• Animal CommunicationAnimals use several ways to communicate with one another. These include the visual, auditory, and tactile...
• Animal Connective TissueTissue that supports and binds other tissues. It consists of connective tissue cells embedded in a large...
• Animal CryptosporidiosisIntestinal infection with organisms of the genus Cryptosporidium. It occurs in both animals and humans...
• Animal DamageThe negative impact, conflict or threat of wildlife to other organisms, property, agricultural or natural...
• Animal Dander1. Tiny scales of animal skin, a common indoor air pollutant.
• Animal Developmental DisordersDisorders in which there is a delay in development based on that expected for a given age level or stage of...
• Animal Digestive JuiceFluids produced by the digestive system to aid in the breakdown of food into nutrients able to be absorbed by...
• Animal Digestive SystemA group of organs stretching from the mouth to the anus, serving to breakdown foods, assimilate nutrients...
• Animal Digestive TractGastrointestinal Tract. Generally refers to the digestive structures stretching from the mouth to anus, but...
• Animal Digestive Tract MucosaThe mucous membrane lining the gastrointestinal tract.
• Animal Disease CarrierA person or animal that harbors the infectious agent for a disease and can transmit it to others, but does...
• Animal Dispersal1. The movement of organisms away from the place of birth or from centers of population density (Ricklefs...
• Animal Ductus DeferensThe excretory duct of the testes that carries spermatozoa. It rises from the scrotum and joins the seminal...
• Animal EarThe hearing and equilibrium system of the body.
• Animal EmbryoAn animal in the early stages of growth and differentiation that are characterized by cleavage, the laying...
• Animal Embryonic StructureThe anatomical parts that make up an organism in the early stages of development.
• Animal Endocrine Gland1. Ductless glands that secrete substances which are released directly into the circulation and which...
• Animal Endocrine System1. The system of glands that release their secretions (hormones) directly into the circulatory system. In...
• Animal EndometriumThe layer of tissue that lines the uterus.
• Animal EndoskeletonSkeleton, or support structure, which is on the inside of the organism's body. All vertebrates possess an...
• Animal Epithelium1. The protective covering of the internal and external organs of the body, including the lining of blood...
• Animal EsophagusThe muscular tube through which food passes from the throat to the stomach.
• Animal ExcretaWaste material expelled from the body, cell or tissue
• Animal Excretory SystemSystem for ridding the body of waste materials
• Animal Exocrine GlandA gland that secretes its product through a duct.
• Animal Exotic DiseaseA disease that normally does not occur within a particular area.
• Animal EyeOrgan of the body responsible for sight
• Animal FasciaFibrous connective tissue in the animal body
• Animal Fat1. Non-petroleum oil, fat, or grease of animal, fish, or marine mammal origin.
• Animal FeatureGeneral terms for characteristics of animals
• Animal FecesExcrement from the intestines, containing unabsorbed solids, waste products, secretions, and bacteria of the...
• Animal FeedDehydrated alfalfa meal; alfalfa prepared as feed for animals; cubed alfalfa; prepared animal feed; chopped...
• Animal Feed FungusFungus which preferentially grows in domestic animal feed. Often toxic
• Animal Feeding Operation1. Lot or facility (other than an aquatic animal production facility) where the following conditions are met...
• Animal Feeding Operation DischargeDischarge from Animal Feeding Operations (AFOs) which are agricultural operations where animals are kept and...
• Animal Feeding TypeAnimals by their behavior to secure nutrition and sustenance
• Animal FetusAn unborn or unhatched vertebrate especially after attaining the basic structural plan of its kind.
• Animal Follicular FluidThe fluid surrounding the ovum and granulosa cells in the Graafian follicle (ovarian follicle). The...
• Animal ForagingTo search for food.
• Animal Fungal DiseasesAnimal illnesses caused by fungi
• Animal GameteAn egg (in the female) or sperm (in the male) cell.
• Animal GangliaClusters of multipolar neurons surrounded by a capsule of loosely organized connective tissue located outside...
• Animal Gastric FundusThe superior portion of the body of the stomach above the level of the cardiac notch.
• Animal Gastric MucosaLining of the stomach, consisting of an inner epithelium, a middle lamina propria, and an outer muscularis...
• Animal Gastrointestinal SystemA group of organs stretching from the mouth to the anus, serving to breakdown foods, assimilate nutrients...
• Animal Genetic DiseasesIllnesses or disorders caused by the action or content of genetic makeup
• Animal GenitaliaThe external and internal organs related to reproduction.
• Animal Genotype1. The genetic composition of an animal or a group of animals; a group or class of animals having the same...
• Animal Geographic MovementAn animal's change of location
• Animal Germ CellAn egg (in the female) or sperm (in the male) cell.
• Animal GingivaOral tissue surrounding and attached to teeth.
• Animal GlandA group of cells or a single cell in animals or plants that is specialized to secrete a specific substance.
• Animal GonadThe primary sex organs of an animal. In males they are the testes, and in females, the ovaries.
• Animal HeadPart of the body that encases the brain, eyes and ears.
• Animal HeartThe hollow, muscular organ that maintains the circulation of the blood.
• Animal HideAny animal pelt or skin as received by a tannery as raw material to be processed.
• Animal HippocampusA curved elevation of gray matter extending the entire length of the floor of the temporal horn of the...
• Animal HistoplasmosisInfection resulting from inhalation or ingestion of spores of the fungus of the genus histoplasma, species H...
• Animal Host1. Species of animal or organism that is attacked by a parasite or a parasitoid
• Animal Hypersensitivity DiseasesGroup of diseases mediated by the deposition of large soluble complexes of antigen and antibody with...
• Animal Imaginal DiscHollow sacs of cells in larva that form adult structures in insects during biological metamorphosis.
• Animal Immune System1. The collection of cells and organs whose role is to protect the body from foreign invaders. Includes the...
• Animal InfluenzaAn acute, contagious viral infection caused by Orthomyxvoviridae and characterized by inflammation of the...
• Animal Insect-Borne DiseasesBacterial and viral diseases transmitted by insects, such as West Nile virus, malaria, or yellow fever
• Animal Integumentary SystemThe outer covering of the body composed of the skin and the skin appendages..
• Animal Islets of LangerhansIrregular microscopic structures, consisting of cords of endocrine cells that are scattered throughout the...
• Animal JointThe point of contact between elements of an animal skeleton whether movable or rigidly fixed together with...
• Animal KidneyBody organ that filters blood for the secretion of urine and that regulates ion concentrations.
• Animal LarynxThe musculocartilaginous structure at the upper part of the trachea; it guards the entrance to the trachea...
• Animal LeishmaniasisA disease caused by any of a number of species of protozoa in the genus Leishmania.
• Animal LeukocyteWhite blood cell. Refers to a blood cell that does not contain hemoglobin.
• Animal Life HistoryDevelopmental processes and behaviors that sustain and reproduce a species. For example, case formation and...
• Animal LigamentShiny, flexible bands of fibrous tissue connecting together articular extremities of bones. They are pliant...
• Animal LimbA jointed appendage,used for locomotion. May be called arms and legs or front and hind limbs
• Animal Lyme Disease1. An infectious disease caused by the spirochete Borrelia burgdorferi. Early manifestations of infection may...
• Animal LymphThe interstitial fluid that is in the lymphatic system.
• Animal Lymphatic SystemA system of organs and tissues that process and transport immune cells and lymph.
• Animal Malpighian TubuleSlender tubular or hairlike excretory structures found in insects. They emerge from the alimentary canal...
• Animal Mammary GlandGlands that produce milk in female mammals
• Animal MandibleJaw-like organs on some invertebrates that are used for seizing and biting food.
• Animal Manure ManagementManure management systems used by animal feeding operations.
• Animal Manure Pit StorageCollection and storage of manure typically below a slatted floor in an enclosed animal confinement facility...
• Animal Mast CellGranulated cells that are found in almost all tissues, most abundantly in the skin and the gastrointestinal...
• Animal Maternal MilkMilk produced by mother animals for their young
• Animal Medulla OblongataThe lower portion of the brain stem. It is inferior to the PONS and anterior to the cerebellum. Medulla...
• Animal MetabolitePesticide chemical residue that is the result of biological breakdown of the parent pesticide within the...
• Animal MigrationSeasonal movement of animals from one region to another.
• Animal MimicryThe resemblance of one organism to another or to natural objects among which it lives for protection and...
• Animal Mite-Borne DiseasesIllness, such as scrub typhus, transmitted by the bite of the mite
• Animal ModelAn animal that is amenable to experimentation and whose physiological or pathologic mechanisms are...
• Animal Mononuclear Phagocyte SystemMononuclear cells with pronounced phagocytic ability that are distributed extensively in lymphoid and other...
• Animal Mosquito-Borne DiseasesDiseases passed to animals by mosquito bites; examples include Yellow Fever, Eastern equine encephalitis...
• Animal MouthThe oval-shaped oral cavity located at the apex of the digestive tract and consisting of two parts: the...
• Animal MucosaAn epithelium with mucus-secreting cells, such as goblet cells. It forms the lining of many body cavities...
• Animal MucusThe viscous secretion of mucous membranes. It contains mucin, white blood cells, water, inorganic salts, and...
• Animal MuscleContractile tissue that produces movement in animals.
• Animal Muscle FiberMuscle cells
• Animal Muscle TissueMuscle tissue is composed of cells that have the special ability to shorten or contract in order to produce...
• Animal Mushroom Body(One of) paired pedunculate masses in the protocerebrum, involved in visual integration and behavior.
• Animal Myelin SheathThe lipid-rich sheath surrounding axons in both the central nervous systems and peripheral nervous systems...
• Animal Myocardium1. The muscle tissue of the heart. It is composed of striated, involuntary muscle cells (myocytes, cardiac)...
• Animal MyofibrilThe long cylindrical contractile organelles of striated muscle cells composed of actin filaments; myosin...
• Animal Myometriumhe smooth muscle coat of the uterus, which forms the main mass of the organ.
• Animal Nasal CavityThe forward (proximal) portion of the passages of the respiratory system, extending from the nares to the...
• Animal NeckBody region serving to connect the head to the rest of the body of an organism
• Animal Nerve TissueTissues making up the nervous system

2,484 of 30,736 terms in Environment terminology (MLC-0121). Request the full dataset.