Environment terminology · MLC-0121
Environment terms: P (2,670)
- Places of worship1. Point locations for buildings used for religious worship (e.g., chapel, mosque, synagogue, tabernacle, or...
- Placic horizonThe placic horizon (Gr. base of plax, flat stone; meaning athin cemented pan) is a thin, black to dark...
- Plagiarism1. Misrepresenting someone else’s creative work (e.g. words, methods, pictures, ideas, or data) as one’s own.
- PlainA region of general uniform slope, comparatively level and of considerable extent.
- Plain tap waterExcludes tap water consumed in the form of juices and other beverages containing tap water.
- Plan of operations1. A plan for mining exploration or development on BLM land involving more than 5 acres or a plan for mining...
- Plan viewA diagram or photo showing a facility as it would appear when looking down on top of it.
- PlanarOn a level plane; flat.
- Planar chromatographyChromatography technique in which the stationary phase resides on a plane (instead of in a column).
- Planetary boundary layer1. The troposphere can be divided into two parts: a planetary boundary layer, PBL, extending upward from the...
- Planetary cameraA type of microfilm camera in which the document being photographed is on a flat surface and both the...
- Planetary wind beltLatitudinal climate belt
- PlanktivoreAn organism that feed on plankton; also called "planktonivore" or "planktonophage".
- Plankton1. The floating or weakly swimming plant and animal life in a body of water, often microscopic in size.
- Plankton bioluminescenceThe production of light by certain living organisms, including fireflies and phytoplankton, by the conversion...
- PlannerA calendar that provides information - or places to insert information- about numerous dates of interest to a...
- Planning1. The process of anticipating future occurrences and problems, exploring their probable impact, and...
- Planning & resource allocationPlanning and Resource Allocation involves the activities of determining strategic direction, identifying and...
- Planning and scopingThe process of determining the purpose, scope, players, expected outcomes, analytical approach, schedule...
- Planning documentsDocuments that are related to preparing for future events, whether positive or negative in nature; a document...
- Planning methodology(Methodology for) the process of anticipating future occurrences and problems, exploring their probable...
- Planning projects and resourcesThe process of anticipating future occurrences and problems, exploring their probable impact, and detailing...
- Planning scenarioPlanning tools that represent a minimum number of credible scenarios depicting the range of potential...
- Planning target1. The amount of Financial assistance which the Regional Administrator suggests that an applicant for...
- Plant abiotic disordersInterference of the normal functioning of a plant that is caused by some non-living factor (e.g., weather)...
- Plant abortionPremature termination of the development of pollen, gametes, embryos, seeds, fruits, flowers, and etc.
- Plant aboveground partParts of a plant that is normally above the surface of the ground
- Plant adaptationPlants may develop special features which allow them to live under particular environmental conditions. These...
- Plant autotrophic processA process by which organisms use simple inorganic substances such as gaseous or dissolved carbon dioxide and...
- Plant barkThe outer layer of the woody parts of plants.
- Plant belowground partParts of a plant that are normally below the surface of the ground
- Plant biomassThe total amount of organic matter present in a plant.
- Plant blending recordRecords which document the weight fraction of organic solvents and solids used in the formulation or...
- Plant by genotype1. The genetic composition of a plant or a group of plants; a group or class of plants having the same...
- Plant by habitatPlants characterized by their preferred habitat
- Plant by phenotype1. The observable structural and functional characteristics of a plant that result from the interaction of...
- Plant byproduct utilizationUtilization of byproducts of crops raised for food or animal feed.
- Plant characteristicFeature which characterizes a plant.
- Plant chromosomeComplex nucleoprotein structures which contain the genomic DNA and are part of the cell nucleus of plants.
- Plant communityThe various plant populations (species) that live in the same habitat or environment, typically with one or...
- Plant competition1. The simultaneous demand of two or more plant individuals or species for a necessary resource in their...
- Plant decadencePlants that are old or deteriorating. In a plant community, decadence refers to an overabundance of dead or...
- Plant developmentThe development and maturation of plant structures
- Plant DNA replication1. The process by which a DNA molecule is duplicated.
- Plant efficiencyPercentage obtained by dividing the actual power or energy by the theoretical power or energy. It represents...
- Plant environmental responseThe reaction of the plant to environmental conditions
- Plant epidermisA thin layer of cells forming the outer integument of seed plants and ferns. (Random House Unabridged...
- Plant (Facility)One or more facilities at the same location owned by or under common control of the same person.
- Plant foot rotA disease of plants in which the stem or trunk rots near the ground.
- Plant (for Plant-incorporated Protectants)For plant-incorporated protectants, means an organism classified using the 5-kingdom classification system of...
- Plant gametogenesisThe process of germ cell development in plants, from the primordial plant cells to the mature haploid plant...
- Plant germ cellThe reproductive cells of plants.
- Plant growthIncreasing size of the plant
- Plant growth controlControl of plant growth by humans.
- Plant hormoneAny of the hormones produced naturally in plants and active in controlling growth and other functions. There...
- Plant hybrid1. The offspring of any cross between two organisms of different genotypes.
- Plant intakeWorks or structures at the head of a conduit through which water is diverted from a source (e.g., river or...
- Plant isoprene metabolismThe methyl-erythritol 4-phosphate pathway in plant chloroplasts eventually produces isoprene which is emitted...
- Plant life cyclePlants characterized by life cycle
- Plant litter1. Undecomposed plant residues on the soil surface.
- Plant metabolism1. The sum of the chemical reactions occurring within a cell or a whole organism; includes the...
- Plant metabolitePesticide chemical residue that is the result of biological breakdown of the parent pesticide within the...
- Plant nodePosition on a stem from which one or more structures (especially leaves) arises.
- Plant parasitic nematodeRound worms that live inside plants to avoid predators
- Plant pathogenic fungusFungus that causes plant diseases
- Plant pathogenic microorganismMicroorganisms which are harmful to plants
- Plant photosynthesis1. The manufacture by plants of carbohydrates and oxygen from carbon dioxide mediated by chlorophyll in the...
- Plant photosynthetic typePlants categorized by the type of photosynthesis they perform
- Plant physiologyThe physiological processes, properties, and states characteristic of plants.
- Plant processAn action or process performed by a plant. (Plant Physiology - The study of the function and chemical...
- Plant reproduction1. The total process by which organisms produce offspring. (Stedman, 25th ed)
- Plant respirationA biochemical process by which living organisms take up oxygen from the environment and consume organic...
- Plant roadway1. Any area of a primary lead processor that is subject to vehicle traffic, including traffic by forklifts...
- Plant roleA characteristic which exists only when the plant is interacting with another plant, a human, a chemical, the...
- Plant rootThe usually underground portions of a plant that serve as support, store food, and through which water and...
- Plant root capA cone-shaped structure in plants made up of a mass of meristematic cells that covers and protects the tip of...
- Plant root nodulationThe formation of a nitrogen-fixing cell mass on plant roots following symbiotic infection by nitrogen-fixing...
- Plant scientific nameUnits used in the science of biological classification, or taxonomy.
- Plant shikimic acid pathwayThe biochemical sequence employed by plants and microorganisms to generate the aromatic amino acids...
- Plant site1. All contiguous or adjoining property that is under common control, including properties that are separated...
- Plant stoma1. Closable opening in the epidermis of plants on the underside of leaves. They allow the exchange of gases...
- Plant trait1. Any aspect of the appearance, behavior, development, biochemistry, or other feature of a plant.
- Plant transpiration1. The process in plants by which water is taken up by the roots and released as water vapor by the leaves...
- Plant type ferredoxinsIron-containing proteins in plant chlorophylls that transfer electrons, usually at a low potential...
- Plant viviparyPlants having seeds or bulbils that germinate while still attached to the parent plant, e.g. mangrove, Allium.
- Plantation1. Forest stand regenerated artificially either by sowing or planting.
- Plant-based foodFood originating from plant sources.
- Planted cropAll annual or perennial agricultural crops from existing agricultural land that may be used as feedstocks for...
- Planted treeTrees harvested from a tree plantation.
- Planter box1. Small, contained vegetated area that is used to collect and treat stormwater through the mechanisms...
- Plant-incorporated protectant1. Pesticidal substance that is intended to be produced and used in a living plant, or in the produce...
- Plant-Incorporated-Protectants, see Plant-incorporated protectant
- Plant-wide emission1. Weighted average of particulate matter and SO2 emissions for Units 1, 2, and 3 based on the heat input to...
- PlaqueRefers to free-standing statues and boardlike products generally used as wall-hangings.
- Plaque assayStandard method used to determine virus concentration in terms of infectious dose. Viral plaque assays...
- PlasmaThe clear, liquid part of the blood in which red blood cells, white blood cells, and platelets are suspended...
- Plasma arc incineratorAny enclosed device using a high intensity electrical discharge or arc as a source of heat followed by an...
- Plasma arc machiningRemoving material or shaping a part by a high-velocity jet of high-temperature, ionized gas. A gas (nitrogen...
- Plasma arc reactorDevices that use an electric arc to thermally decompose organic and inorganic materials at ultra-high...
- Plasma arc reactors, see Plasma arc reactor
- Plasma etchingProcess type that consists of any production process using fluorinated GHG reagents to selectively remove...
- Plasma membrane1. The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of...
- Plasma proteinsProteins that are present in blood serum, including serum albumin; blood coagulation factors; and many other...
- Plasmid1. A circular piece of DNA that exists apart from the chromosome and replicates independently of it...
- Plasminogen activator interactionPlasminogen Activator Interaction involves temporary non-covalent binding through intermolecular physical...
- Plasmodial slime moldFormerly considered as fungi, the plasmodial slime molds are now classified as Protozoa.
- PlasmodiumA genus of protozoa that comprise the malaria parasites of mammals. Four species infect humans (although...
- Plastera substance that is used esp. for spreading on walls and ceilings because it makes a smooth, hard surface...
- PlasticRefers to plastic containers and packaging made from various resins, including PETE, HDPE, PVC, LDPE, PP, and...
- Plastic fencingBarrier with an open-weave pattern that can be used to control drifting snow or sand by restricting the force...
- Plastic limitThe lower limit of the plastic state of a soil.
- Plastic lumber landscaping timber and postUsed to enhance the appearance of and control erosion in parks, highways, housing developments, urban plazas...
- Plastic materialSynthetic organic polymer (i.e., a thermoset polymer, a thermoplastic polymer, or a combination of a natural...
- Plastic or composites molding facilityFacility where the purchase cost of capital equipment used for plastic or composites molding, including...
- Plastic partPanels, housings, bases, covers, and other business machine components formed of synthetic polymers.
- Plastic pollutionPlastic waste that, intentionally or unintentionally, enters the environment during the production...
- Plastic processorRefers to an intermediate operating facility where recovered plastic products and materials are sorted...
- Plastic property1. Property of polymeric materials (usually organic) of large molecular weight which can be shaped by flow...
- Plastic soilOne that will deform without shearing (typically silts or clays). Plasticity characteristics are measured...
- Plastic substrateSubstrates containing one or more resins and may be solid, porous, flexible, or rigid.
- Plastic vehicle bodyAutomobile or light-duty truck body constructed of synthetic organic material.
- Plastic vehicle body componentAny component of an automobile or light-duty truck exterior surface constructed of synthetic organic material.
- Plastic wire extrusionApplying a plastic material to a metal wire through an extrusion process.
- Plasticity indexThe range of water content in which soil is in a plastic state. PI is calculated as the difference between...
- Plasticizer1. Small, often volatile molecules that are added to hard, stiff plastics to make them softer and more...
- Plasticizers, see Plasticizer
- Plastics1. Non-metallic chemoreactive compounds molded into rigid or pliable construction materials, fabrics, etc.
- Plastics additiveAdditives are incorporated in plastic materials prior to processing to impart specific chemical or physical...
- Plastics and rubber products manufacturingIndustries in the Plastics and Rubber Products Manufacturing subsector make goods by processing plastics...
- Plastics coatingA variety of methods are available to coat objects, web materials, and other substrates with plastic.
- Plastics finishing operationMany plastic products need finishing or machining after they have been processed to remove imperfections...
- Plastics manufacturing chemicalChemical substances which are used in the production of plastics.
- Plastics molding and formingManufacturing process in which plastic materials are blended, molded, formed, or otherwise processed into...
- Plastics processingPlastic products manufacturing involves molding, forming, shaping, or otherwise altering plastic resins or...
- Plastics/Rubber Recycling UnitIntegrated processing unit where plastics, rubber, and/or rubber tires are the only feed materials...
- Plastid1. Any member of a family of organelles found in the cytoplasm of plants and some protists, which are...
- PlastocyaninA copper-containing plant protein that is a fundamental link in the electron transport chain of green plants...
- PlastoquinoneA small organic molecule involved in electron and proton transfer in photosynthesis.
- PlastronThe lower part of a turtle's shell.
- PlateA metal plate, usually lead or lead compound, immersed in the electrolyte in a battery.
- Plate boundaryThe edge of a slab of rigid lithosphere (crust and uppermost mantle) that moves over the asthenosphere.
- Plate coolerA heat exchanger in which water at ground temperature or chilled water is used to cool milk prior to its...
- Plate millSteel hot forming operations that produce flat hot-rolled products which are (1) between 8 and 48 inches wide...
- Plate soakProcess operation of soaking or reacting lead subcategory battery plates, that are more than 2.5 mm (0.100...
- Plate tectonicsA scientific theory that describes how large sections of the Earth's crust called plates move over time. The...
- Plate tower scrubberAn air pollution control device that neutralizes hydrogen chloride gas by bubbling alkaline water through...
- Plateau1. (Geographical) an elevated plain, tableland or flat-topped region of considerable extent.
- Platelet activating factor degradationPlatelet Activating Factor Degradation consists of conjugation, transport, and/or oxidation of a phospholipid...
- Platelet activating factor stabilizationPlatelet Activating Factor Stabilization inhibits conjugation, transport, oxidation, or proteolysis of a...
- Platelet aggregationAny cell adhesion process that involves the association of platelets via adhesion molecules.
- Platelet aggregation processAny cell adhesion process that involves the association of platelets via adhesion molecules.
- Platelet aggregation process regulationAny process that modulates the rate, frequency or extent of platelet aggregation via adhesion molecules.
- Platelet-rich plasmaA preparation consisting of platelets concentrated in a limited volume of plasma. This is used in various...
- Platform1. An underlying computer system on which application programs can run. For example, a Dell computer running...
- Platform as serviceThe capability provided to the consumer is to deploy onto the cloud infrastructure consumer-created or...
- PlatingThe process where the surface of the metal is modified by adding several layers of metal coating by using a...
- Plating and polishing facilityFacility engaged in one or more of the following processes that uses or emits any of the plating and...
- Plating and polishing material metallic hazardous air pollutant contentHAP content as determined from an analysis or engineering estimate of the HAP contents of the tank bath or...
- Plating and polishing metal hazardous air pollutantAny compound of any of the following metals: cadmium, chromium, lead, manganese, and nickel, or any of these...
- Plating and polishing process tankAny tank in which a process is performed at an affected plating and polishing facility that uses or has the...
- PlatteThe Platte River Basin below the confluence of the North and South Platte River Basins, excluding the Elkhorn...
- PlausibilityThe degree to which a cause-effect relationship would be expected, given known facts.
- Play1. A set of oil or gas accumulations sharing similar geologic, geographic properties, such as source rock...
- Play areaArea of frequent soil contact by children of less than 6 years of age as indicated by, but not limited to...
- Playa1. Playas are shallow, short-lived lakes that form where water drains into basins with no outlet to the sea...
- Playa lakesRound hollows in the ground in the Southern High Plains of the United States. They are ephemeral, meaning...
- Playground equipmentMany components, like slides, merry-go-rounds, hand rails, etc., and is found in parks, schools, child care...
- Pleasure craft1. Privately owned vessels used for noncommercial purposes.
- Pleasure Craft Finish Primer/Surfacer/UndercoaterCoating designed and labeled exclusively to be applied prior to the application of a pleasure craft topcoat...
- Pleasure craft topcoatCoating designed and labeled exclusively to be applied to a pleasure craft as a final coat above the...
- Plenum1. Air compartment connected to a duct or ducts.
- Pleomorphic microorganismHas the ability to change shape.
- Pleura1. The tissue that lines the wall of the thoracic cavity and the surface of the lungs.
- Pleural fibrosisThe development of fibrous tissue in the pleura.
- Plug and abandon wellThe casing and other equipment is removed and salvaged.Cement plugs are placed in the borehole to prevent...
- Plug Drill-outRemoval of a plug (or plugs) that was used to isolate different sections of the well.
- Plug flow1. A type of flow that occurs in tanks, basins or reactors when a slug of water moves through a tank without...
- Plug flow digester1. A constant volume, flow-through, controlled temperature biological treatment unit designed to maximize...
- Plug-and-play photovoltaic systemA commercial, off-the-shelf photovoltaic system that is fully inclusive with little need for individual...
- Plugging1. Act or process of stopping the flow of water, oil, or gas into or out of a formation through a borehole or...
- Plugging and abandonment planPlan for plugging and abandonment prepared in accordance with the requirements of §§ 144.28 and 144.51.
- Plugging recordSystematic listing of permanent or temporary abandonment of water, oil, gas, test, exploration and waste...
- Plug-inPlug-in applications are programs that can easily be installed and used as part of your Web browser. A...
- Plug-in combustion controlReplacement, in a cell burner boiler, of existing cell burners by low NOX burners or low NOX burners with...
- Plug-in hybrid electric vehicle1. Meaning given in § 86.1803 of this chapter.
- Plug-in hybrid enginePlug-in hybrid electric vehicle (PHEVs) engines use batteries to power an electric motor and another fuel...
- Plum processingProcessing of plums into the following product styles: Canned and frozen, pitted and unpitted, peeled and...
- Plumage1. The feathers that cover a bird's body.
- Plume1. A concentration of contaminants in air, soil, or water usually extending from a distinct source.
- Plume modelPlume models are used widely for permitting under requirements to assess the impacts of large new or modified...
- Plume of contaminationThat volume of ground water in the predominant direction of ground water flow that contains radioactive...
- Plumes, see Plume
- Plunge poolA natural or sometimes artificially created pool that dissipates energy of free falling water. The basin is...
- Pluralism1. Conceptual pluralism holds that causation has multiple distinct definitions that are all potentially...
- Plutonic igneous rockAny igneous rock that cools beneath the surface.
- PlutoniumA radioactive metallic element chemically similar to uranium.
- Pluvial lakeA lake formed in a land-locked basin during a period of increased rainfall associated with glacial advance...
- Plywood and composite wood products1. Panel product consisting of layers of wood veneers hot pressed together with resin. Plywood includes panel...
- Plywood and composite wood products manufacturing facilityFacility that manufactures plywood and/or composite wood products by bonding wood material (fibers...
- PM 10C1. Particulate matter with an aerodynamic diameter less than or equal to a nominal 10 micrometers as measured...
- PM 2.5 attainment plan precursorS02 and those other PM2.5 precursors emitted by sources in the State which the State must evaluate for...
- PM 2.5 NAAQSParticulate matter national ambient air quality standards (annual and 24-hour) codified at 40 CFR 50.7.PM 2.5...
- PM 2.5 precursorAir pollutants other than PM2.5 direct emissions that contribute to the formation of PM2.5. PM2.5 precursors...
- PM-10PM-10 or PM10 refers to particles in the atmosphere with a diameter of less than ten or equal to 10...
- PM10 (1987 standard)1. Description: PM10 (1987 standard)
- PM-10/PM-2.5PM 10 is measure of particles in the atmosphere with a diameter of less than ten or equal to a nominal 10...
- PM-2.5PM-2.5 or PM2.5 refers to smaller particles in the air (i.e., less than or equal to 2.5 micrometers in...
- PM2.5 24hr (2006 standard)1. Description: PM2.5 24hr (2006 standard)
- PM2.5 annual (1997 standard)1. Description: PM2.5 Annual (1997 standard)
- PM2.5 annual (2012 standard)1. Description: PM2.5 Annual (2012 standard)
- PMCIDThe identifier assigned to a full-text record in PubMed Central.
- PMIDThe reference number assigned to an abstract in PubMed.
- Pneumatic coal-cleaning equipment1. For units constructed, reconstructed, or modified on or before May 27, 2009, any facility which classifies...
- Pneumatic controllerNatural gas-driven pneumatic controller as defined at 40 CFR 60.5430 and 60.5430a.
- Pneumatic deviceTool or instrument that generates and utilizes compressed air, such as a riveter, jackhammer, paint sprayer...
- Pneumatic pumpNatural gas-driven diaphragm pump as defined at 40 CFR 60.5430a.
- Pneumatic pump emissionsVOC-containing emissions from pneumatic pumps.
- Pneumoconiosis1. Health conditions characterized by permanent deposition of substantial amounts of particulate matter in...
- PneumoniaA very serious health condition where a person's lungs are filled with fluid. This makes it very hard for...
- PoalesFlowering plants which include grasses and sedges
- Pocket beach1. A small, narrow beach formed between two littoral obstacles, such as between rocky headlands or...
- Pocket wetlandA free water surface constructed wetland with a contributing drainage area of 1 to 10 acres. It stores runoff...
- PocosinEvergreen shrub and tree dominated wetlands found predominantly along the Central Atlantic coastal plain.
- PocosinsA type of palustrine wetland with deep, acidic, sandy, peat soils. Groundwater saturates the soil except...
- Pod (Fruit)A dry, dehiscent fruit.
- PodcastA music or talk program made available in digital format for automatic download over the Internet to a...
- PoikilothermAn organism with body temperature that fluctuates to match that of the external environment
- PointMeans the response associated with the BMR will be the BMR itself. "Extra" (Hill model only) means the...
- Point absorberWave energy capture device, with principal dimension relatively small compared to the wavelength, and is able...
- Point air emissionsAll releases of the EPCRA Section 313 chemical to the air that occur through stacks, confined vents, ducts...
- Point analyzerAutomated analytical method that measures pollutant concentration in an ambient air sample extracted from the...
- Point biserial coefficientA measure of association between an interval-ratio variable and a nominal variable with two attributes.
- Point diversityfor a small or microhabitat sample within a community regarded as homogeneous.
- Point emissionsThe emissions released from a facility that is included in the EIS Facility Inventory.
- Point estimate1. An estimate of a population parameter that is a single numerical value.
- Point mutationA small-scale mutation in which a single nucleotide is exchanged for another. Mutagenic chemicals and...
- Point of compliance1. For groundwater, represents where a facility should monitor groundwater quality and/or achieve specified...
- Point of contactPerson whom you can contact regarding a resource.
- Point of deliveryPoint at the boundary or within the plant site where the owner or operator first accepts custody, takes...
- Point of departure1. The dose-response point that marks the beginning of a low-dose extrapolation. This point can be the lower...
- Point of determination1. Each point where process wastewater exits the process unit, whose primary product is a product produced by...
- Point of disinfectant applicationThe point where disinfectant is applied and water downstream of that point is not subject to recontamination...
- Point of exposureThe place where someone can come into contact with a substance present in the environment.
- Point of first retail sale1. Point at which the engine is first sold directly to an end user. Generally, this point is the retail boat...
- Point of generation of a Hazardous WasteThe point at which a waste is first determined to be hazardous. For listed wastes this is the point at which...
- Point of injection1. The last accessible sampling point prior to waste fluids being released into the subsurface environment...
- Point of treatmentPoint after the treated material exits the treatment process but before the first point downstream of the...
- Point of waste origination1. When the facility owner or operator is the generator of the hazardous waste, the point of waste...
- Point of waste treatmentPoint where a hazardous waste to be treated in accordance with § 265.1083(c)(2) of this subpart exits the...
- Point pattern analysisA technique in geostatistics of restricting the analysis to location information, ignoring attribute...
- Point source1. A stationary location or fixed facility such as an industry or municipality that discharges pollutants...
- Point source category1. Industrial category of facilities that are grouped by specific industrial process operations and discharge...
- Point source category codeA three-digit code that corresponds to an Effluent Limitations' Guidelines 40 CFR Part. For example, Point...
- Point source contaminationThe Clean Water Act's National Pollutant Discharge Elimination System (NPDES) program controls direct...
- Point source dischargeDischarge of pollutant from a discernible, confined and discrete conveyance, including but not limited to any...
- Point source discharger (or direct discharger)A point source that discharges a pollutant(s) to waters of the United States, such as streams, lakes, or...
- Point source discharges, see Point source discharge
- Point source emission1. Emission from any discernible, confined, and discrete conveyance, including but not limited to, any pipe...
- Point source modelRepresentation of processes that emit pollutants from point sources
- Point source (of pollution), see Point source
- Point source pollution1. Pollutant loads discharged at a specific location from pipes, outfalls, and conveyance channels from...
- Point source pollution (or point source discharge), see Point source pollution
- Point sources, see Point source
- Point-contact cellHigh efficiency silicon photovoltaic concentrator cell that employs light trapping techniques and...
- Point-of-contact measurementDirect measurement or point-of-contact exposure measurement "evaluates an exposure as it occurs, by using...
- Point-of-contact measurement of exposure1. Estimating exposure by measuring concentrations over time (while the exposure is taking place) at or near...
- Point-of-entry treatment deviceA treatment device applied to the drinking water entering a house or building for the purpose of reducing...
- Point-of-entry water treatment1. These devices treat all the water coming into a house or facility.
- Point-of-use treatment device1. A treatment device applied to a single tap used for the purpose of reducing contaminants in drinking water...
- Point-of-use water heaterThe water is heated at the point of use as it is needed.
- Point-of-use water treatment1. Point-of-use (POU) water treatment devices are designed to treat small amounts of drinking water for use...
- Poison1. Substances which, when ingested, inhaled, or absorbed, or when applied to, injected into, or developed...
- PoisoningA condition or physical state produced by the ingestion, injection or inhalation of, or exposure to a...
- Poisonous animalAnimals secreting toxic fluids, such as venom, used for protection or the acquisition of food.
- Poisonous fungusDeadly, non-edible fungus
- Poisson distribution1. Poisson distributions model (some) discrete random variables (i.e., variables that may take on only a...
- Polar cellAir rises, diverges, and travels toward the poles. Once over the poles, the air sinks, forming the polar...
- Polar jet streama jet stream marked by a concentration of isotherms and strong vertical shear, this jet is the boundary...
- Polar organic compoundOrganic compounds which have a net molecular dipole moment.
- Polar stratospheric cloudHigh altitude clouds that form in the stratosphere above Antarctica during the Southern Hemisphere winter...
- POLARITYThe change or retention of the dark-to-light relationship of an image. For example, going from a first-...
- Polarize, polarization, polarizableSeparation of ge, as in induced polarization or IP.
- Polarized light microscopy1. Microscope technology that uses the polarity (or orientation) of light waves to provide better images than...
- Pole attachmentA communications relay or receiving device attached to a pole, duct or conduit owned or controlled by a...
- Pole floatFloat located inside a guidepole that floats on the surface of the stored liquid. The rim of the float has a...
- Pole shaderA copper bar circling the laminated iron core inside the coil of a magnetic starter.
- Pole sleeveDevice which extends from either the cover or the rim of an opening in a floating roof deck to the outer...
- Pole wiperSeal that extends from either the cover or the rim of an opening in a floating roof deck to the outer surface...
- Police officerMaintain order and protect life and property by enforcing local, tribal, State, or Federal laws and...
- Policies & guidanceInternal and external policies, guidance and guidelines related to agency operations and/or regulatory...
- Policy1. Generally, any statement of approach, philosophy, goal or decision. For ESRP purposes, the output of a...
- Policy & guidance developmentPolicy and Guidance Development involves the creation and dissemination of guidelines to assist in the...
- Policy agreementsIAs where no funds change hands. These agreements set forth basic policies and procedures governing the...
- Policy analysisAn analysis used to help managers understand the extent of the problem or need that exists and to set...
- Policy, guidelines & standardsActivities supporting the proper publication, maintenance, storage, and retrieval of policies, standards, and...
- Policy periodThe period during which the policy contract provides protection (e.g., six months or one or three years).
- Policy-relevant researchResearch that supports EPA policies and mission
- PoliovirusA species of ENTEROVIRUS which is the causal agent of POLIOMYELITIS in humans. Three serotypes (strains)...
- PolishingRemoving stock from a part using loose or loosely held abrasive grains carried to the part by a flexible...
- Political interferenceInterference in the conduct, use, or communication of science directed or conducted by political officials...
- Political subdivisionAny general purpose unit of a local or State government.
- Pollen1. The fertilizing element of flowering plants; background air pollutant.
- Pollen allergyAllergens like pollen are nothing more than foreign plant antigens. The stimulus for sneezing gets triggered...
- Pollen flowNatural movement of pollen from one organism to another
- Pollen germinationPlant pollen grain changes from hydration until the appearance of the pollen tube
- Pollen tubeA growth from a pollen grain down into the flower style which allows two sperm to pass, one to the ovum...
- PollinateTo fertilize a plant by transferring pollen grains from a male plant structure to a female plant structure.
- Pollination1. The transfer of pollen grains (male gametes) to the plant ovule (female gamete).
- PollinatorAnimals or insects that transfer pollen from plant to plant Responsible for assisting over 80% of the world's...
- Pollutant1. Dredged spoil, solid waste, incinerator residue, sewage, garbage, sewage sludge, munitions, chemical...
- Pollutant annual averageThe mean concentration, mass loading or production-normalized mass loading of a pollutant over a period of...
- Pollutant categories, see Pollutant category
- Pollutant categoryGroup of pollutants that can be searched in the ELG Database for applicable point source categories...
- Pollutant concentration monitorComponent of the continuous emission monitoring system that measures the concentration of a pollutant in a...
- Pollutant, conservative1. A pollutant that does not readily degrade in the environment, and which is mitigated primarily by natural...
- Pollutant coverageThe minimum set of expected pollutants that EPA has identified as likely to occur from an emissions sector or...
- Pollutant Discharge1. Any addition of any “pollutant” or combination of pollutants to “waters of the United States” from any...
- Pollutant discharged massMass of Pollutant That Can be Discharged. Pollutant mass calculated by multiplying the pollutant...
- Pollutant indicatorFlag indicating whether or not the Cause of an impairment is a Pollutant.
- Pollutant limitNumerical value that describes the amount of a pollutant allowed per unit amount of sewage sludge (e.g...
- Pollutant load1. The amount of pollutants entering a waterbody. Loads are usually expressed in terms of a weight and a time...
- Pollutant loadingThe quantity of a contaminant entering the environment (soil, water, or air); typically related to specific...
- Pollutant minimization programIn the context of § 131.14, is a structured set of activities to improve processes and pollutant controls...
- Pollutant nameThe name used in ICIS-NPDES to identify the substance discharged. Search Considerations: A pollutant name is...
- Pollutant, non- conservativePollutants that are mitigated by natural biodegradation or other environmental decay or removal processes in...
- Pollutant pathways1. Avenues for distribution of pollutants. In most buildings, for example, HVAC systems are the primary...
- Pollutant processes modelModel which includes relevant pollutant processes, such as buildup and wash-off.
- Pollutant ranking assessmentAn assessment used to rank chemicals with respect to their impact on human health and the environment. Often...
- Pollutant sourceAny source of air pollution subject to applicable legal requirements as defined in paragraph (c).
- Pollutant source sectorCategory of related sources of nutrient and sediment loads identified for purposes of quantifying load...
- Pollutant standard indexIndicator of one or more pollutants that may be used to inform the public about the potential for adverse...
- Pollutants, see Pollutant
- Pollutant-specific emissions unitEmissions unit considered separately with respect to each regulated air pollutant.
- Polluted runoffGenerally refers to that part of precipitation, snow melt, or irrigation water that runs off the land into...
- Polluted wetlandAlthough wetlands are capable of absorbing pollutants from the surface water,there is a limit to their...
- Pollution1. Any substances in water, soil, or air that degrade the natural quality of the environment, offend the...
- Pollution abatement areaPart of the permit area that is causing or contributing to the baseline pollution load of pre-existing...
- Pollution attenuation1. The process by which a compound is reduced in concentration over time, through absorption, adsorption...
- Pollution control equipmentPollution control equipment includes a wide variety of devices that reduce, prevent, capture or destroy air...
- Pollution control technologyEquipment, methods and processes used to control pollution or other adverse impacts on environmental quality.
- Pollution control technology standardA pollution control standard that mandates the use of a specific control technology or production process by...
- Pollution episodeAn air pollution incident in a given area caused by a concentration of atmospheric pollutants under...
- Pollution feeCharge based on the quantity of pollutants released into the environment
- Pollution mitigationAct of reducing the impact of pollutants on the environment by acting to clean and remove, visibly reduce, or...
- Pollution prevention1. Identifying areas, processes, and activities which create excessive waste products or pollutants in order...
- Pollution Prevention & ControlPollution Prevention and Control includes activities associated with identifying appropriate pollution...
- Pollution Prevention ActEstablished the national policy that pollution should be prevented or reduced at the source whenever feasible.
- Pollution Prevention Allowable Discharge1. Quantity of/concentrations of pollutants in wastewaters being discharged to publicly owned treatment works...
- Pollution Prevention AnalysisInclude in-process, real-time monitoring and control during syntheses to minimize or eliminate the formation...
- Pollution Prevention/Source Reduction1. Source reduction as defined under the Pollution Prevention Act (42 U.S.C. 13101-13109). The definition is...
- Pollution Related Respiratory DisordersRespiratory disorders due to the presence of contaminants or harmful substances in one's environment...
- Pollution Release ClassificationThe following size classifications which are provided as guidance to the OSC for meeting pollution reporting...
- Pollution Release Size ClassificationThe following size classifications which are provided as guidance to the OSC for meeting pollution reporting...
- Pollution TaxMost environmental taxes are designed primarily to raise revenue, often to fund environmental protection...
- PoloniumA radioactive element that occurs in pitchblende and other uranium-containing ores.
- Poly Acrylamide Gel ElectrophoresisAnalytical and separative procedures in which molecules, particularly proteins or nucleic acids, are...
- PolyamidesPolymers where the main polymer chain comprises recurring amide groups. These compounds are generally formed...
- Polyamine catabolismPolyamine Catabolism is a destructive metabolic process in which low molecular weight cations, containing two...
- Polyamine synthesis inhibitionPolyamine Synthesis Inhibition involves interference with, or restraint of, the activities of biologic...
- Polyaromatic hydrocarbon1. Aromatic hydrocarbons containing more than one fused benzene ring.
- Polybrominated biphenyls (0.1)See figure at: https://ordspub.epa.gov/ords/guideme_ext/f?p=guideme:chemical-detail:::::casrn:N575
- Polybrominated dibenzofuransAny member of a class of dibenzofurans with two to eight bromine substituents.
- Polybrominated Dibenzo-p-DioxinAny member of a class of dibenzo-p-dioxins with two to eight bromine substituents.
- Polybrominated diphenyl ethersCompounds that contain two halogenated benzene rings linked via an OXYGEN atom. Many polybrominated diphenyl...
- Polybrominated diphenylsDiiphenyl compounds which are extensively brominated. Many of these compounds are toxic environmental...
- Polybutadiene rubber by solutionPolymer of 1,3-butadiene produced using a solution process.
- PolycarbonatesPolycarbonates are engineering thermoplastic resins produced by (1) phosgenation of dihydric phenols, usually...
- Polychlorinated alkanes (C₁₀ to C₁₃) (1.0)Includes those chemicals defined by the following formula (except for those members of the category that have...
- Polychlorinated biphenyls1. A group of toxic, persistent chemicals used in electrical transformers and capacitors for insulating...
- Polychlorinated biphenyls articleAny manufactured article, other than a PCB Container, that contains PCBs and whose surface(s) has been in...
- Polychlorinated biphenyls article containerAny package, can, bottle, bag, barrel, drum, tank, or other device used to contain PCB Articles or PCB...
- Polychlorinated biphenyls bulk product wasteWaste derived from manufactured products containing PCBs in a non-liquid state, at any concentration where...
- Polychlorinated biphenyls capacitorAny capacitor that contains ≥500 ppm PCB. Concentration assumptions applicable to capacitors appear under §...
- Polychlorinated biphenyls containerAny package, can, bottle, bag, barrel, drum, tank, or other device that contains PCBs or PCB Articles and...
- Polychlorinated biphenyls contaminated electrical equipmentAny electrical equipment including, but not limited to, transformers (including those used in railway...
- Polychlorinated biphenyls contaminated materialNon-liquid material containing PCBs at concentrations ≥50 ppm but < 500 ppm; a liquid material containing...
- Polychlorinated biphenyls contaminated sediment(Sediment contaminated with) any chemical substance that is limited to the biphenyl molecule that has been...
- Polychlorinated biphenyls disposalIntentionally or accidentally to discard, throw away, or otherwise complete or terminate the useful life of...
- Polychlorinated biphenyls disposal research and developmentDemonstrations for commercial PCB disposal approvals, pre-demonstration tests, tests of major modifications...
- Polychlorinated biphenyls equipmentAny manufactured item, other than a PCB Container or a PCB Article Container, which contains a PCB Article or...
- Polychlorinated biphenyls field screening testPortable analytical device or kit which measures PCBs. PCB field screening tests usually report less than or...
- Polychlorinated biphenyls household wastePCB waste that is generated by residents on the premises of a temporary or permanent residence for...
- Polychlorinated biphenyls itemAny PCB Article, PCB Article Container, PCB Container, PCB Equipment, or anything that deliberately or...
- Polychlorinated biphenyls mark1. Descriptive name, instructions, cautions, or other information applied to PCBs and PCB Items, or other...
- Polychlorinated biphenyls radioactive wastePCBs regulated for disposal under subpart D of this part that also contain source, special nuclear, or...
- Polychlorinated biphenyls spillBoth intentional and unintentional spills, leaks, and other uncontrolled discharges where the release results...
- Polychlorinated biphenyls spill areaArea of soil on which visible traces of the spill can be observed plus a buffer zone of 1 foot beyond the...
- Polychlorinated biphenyls spill boundaryActual area of contamination as determined by postcleanup verification sampling or by precleanup sampling to...
- Polychlorinated biphenyls transformer ruptureViolent or non-violent break in the integrity of a PCB Transformer caused by an overtemperature and/or...
- Polychlorinated biphenyls waste(Generally, any waste) that is limited to the biphenyl molecule that has been chlorinated to varying degrees...
- Polychlorinated biphenyls waste facilityAll contiguous land, and structures, other appurtenances, and improvements on the land, used for the...
- Polychlorinated biphenyls waste generatorAny person whose act or process produces PCBs that are regulated for disposal under subpart D of this part...
- Polychlorinated biphenyls waste management unitParticular building, structure, or cell used to manage PCB waste (including, but not limited to, a building...
- Polychlorinated biphenyls waste transporterFor the purposes of subpart K of this part, any person engaged in the transportation of regulated PCB waste...
- Polychlorinated dibenzofurans1. A chemical class containing 135 congeners of which 10 (listed in Table 2) are thought to have dioxin-like...
- Polychlorinated Dibenzo-p-Dioxins1. A family of 75 congeners of which 7 are thought to have dioxin-like toxicity. The polychlorinated...
- Polychromatic erythrocyteImmature red blood cell that, because it contains RNA, can be differentiated by appropriate staining...
- Polycyclic aromatic compounds (*)This category includes the chemicals listed. See table at...
- Polycyclic aromatic hydrocarbons1. Please see the ATSDR fact sheet for polycyclic aromatic hydrocarbons.
- Polycyclic organic matter1. Organic matter extractable by methylene chloride as determined by Method 315 in appendix A to this part or...
- PolydipsiaExcessive thirst persisting for long periods of time
- PolyelectrolyteA chemical formed by the union of many monomers (a molecule of low molecular weight). Polymers are used with...
- Polyelectrolytes, see Polyelectrolyte
- Polyester filmA film base of transparent plastic that keeps its original size and shape, resists tearing, and is strong and...
- Polyesters1. Polymers of organic acids and alcohols, with ester linkages--usually polyethylene terephthalate; can be...
- Polyether polyolCompound formed through the polymerization of EO or PO or other cyclic ethers with compounds having one or...
- Polyether polyol manufacturing process unit1. Process unit that manufactures a polyether polyol as its primary product, or a process unit designated as...
- Polyethylene1. A flexible plastic used in many household items including plastic wrap and food containers.
- Polyethylene glycolsPolymers of ethylene oxides and water, and their ethers. They vary in consistency from liquid to solid...
- Polyethylene sheeting(Used as soil-gas-retarder); Plastic sheeting, about drop cloth weight, used over gravel and under the...
- Poly(ethylene Terephthalate)1. Refers to a thermoplastic material used to manufacture plastic soft drink containers and rigid containers...
- Polyethylene terephthalate1. Refers to a thermoplastic material used to manufacture plastic soft drink containers and rigid containers...
- Poly(ethylene terephthalate) manufacture using dimethyl terephthalateManufacturing of poly(ethylene terephthalate) based on the esterification of dimethyl terephthalate (DMT)...
- Poly(ethylene terephthalate) manufacture using terephthalic acid1. Manufacturing of poly(ethylene terephthalate) based on the esterification reaction of terephthalic acid...
- Poly(ethylene terephthalate) resinPolymer or copolymer comprised of at least 50 percent bis-(2-hydroxyethyl)-terephthalate by weight.
- Polyethylene terepthalateThermoplastic material used in plastic soft drink and rigid containers.
- Polyfluoroalkyl substanceGroup of man-made chemicals that includes PFOA, PFOS, GenX, and many other chemicals.
- PolyformingThe thermal conversion of naphtha and gas oils into high-quality gasoline at high temperatures and pressure...
- Polygonum cuspidatumJapanese knotweed is an upright, shrublike, herbaceous perennial that can grow to over 10 feet in height. As...
- Polyhaline1. Salty waters with salinities that range from 18 to 30 parts per thousand (ppt).
- Polyhaline waterSalty waters with salinities that range from 18 to 30 parts per thousand (ppt).
- Polyhalogenated aromatic hydrocarbonsAromatic hydrocarbons containing more than one halogen atom
- Polyhalogenated dibenzofuransAny member of a class of dibenzofurans containing two to eight chlorine, bromine, or a combination of...
- Polyhalogenated Dibenzo-p-DioxinsAny member of a class of dibenzo-p-dioxins containing two to eight chlorine substituents or two to eight...
- Polyisocyanurate insulationInsulation produced principally by the polymerization of polymeric polyisocyanates, usually in the presence...
- Polymer1. A chemical formed by the union of many monomers (a molecule of low molecular weight). Polymers are used...
- Polymer decompositionType of chemical change in which a polymeric substance breaks down into simpler, smaller weight substances as...
- Polymer degradationType of chemical change in which a polymeric substance breaks down into simpler, smaller weight substances as...
- Polymer electrolyte membraneMost common type of fuel cell for vehicle applications is the polymer electrolyte membrane (PEM) fuel cell...
- Polymer manufacturing plantManufacturing facility which makes finished end products from raw materials including monomers and solvents.
- Polymer molecule1. Molecule which includes at least four covalently linked subunits, at least two of which are internal...
- Polymer solution colligative propertyOsmotic pressure, boiling point, freezing point, vapor pressure, etc.
- Polymerase chain reactionLaboratory technique used to make multiple copies of a segment of DNA. PCR is very precise and can be used to...
- Polymerase chain reaction method1. A method in which a target DNA sequence is preferentially replicated from a mixture of non-target...
- Polymerase chain reaction technique1. A technique for amplifying DNA sequences in vitro by separating the DNA into two strands and incubating it...
- Polymerase chain reaction toolA tool for amplifying a DNA base sequence using multiple rounds of heat denaturation of the DNA and annealing...
- PolymerasesAny of various enzymes, such as DNA polymerase, RNA polymerase, or reverse transcriptase, that catalyze the...
- Polymeric product1. Resin, produced using the same monomers and varying in additives (e.g., initiators, terminators, etc.)...
- Polymeric resinFor the purposes of this subpart, means a polymer with the following characteristics: The polymer is a block...
- Polymeric structure typePolymers classified by the size, shape, and order of their molecular chains
- Polymerization processAny of a number of industrial processes which make polymeric materials from monomeric starting materials.
- Polymerization process equipmentCollection of process units and associated process equipment used in the acrylonitrile polymerization process...
- Polymerization reaction sectionEquipment designed to cause monomer(s) to react to form polymers, including equipment designed primarily to...
- Polymerization reaction type1. The act or process of changing to a polymeric form. Polymerization consists of reactions that form a...
- Polymerization reactorAny vessel in which vinyl chloride is partially or totally polymerized into polyvinyl chloride. For bulk...
- Polymerizing monomer1. Compound which may form polymer buildup in pump mechanical seals resulting in rapid mechanical seal...
- Polymers, see Polymer
- Polymethyl methacrylatePolymerized methyl methacrylate monomers which are used as sheets, moulding, extrusion powders, surface...
- Polymorphic stateState in which individuals in a population have more than one genotype at a locus. It is a property of a...
- Polymorphism1. One of several forms of a genetic characteristic at a locus in a population. Also, the presence in a...
- PolynomialA mathematical function of the sum of a constant, linear term, quadratic term, cubic term, etc.
- Polynuclear aromatic hydrocarbon1. Synonymous with polyaromatic hydrocarbon.
- Polynucleotides13 or more nucleotides
- PolyolFor the purpose of this subpart, means a polyether or polyester polymer with more than one reactive hydroxyl...
- Polyolefin adhesion promoterCoating designed and labeled exclusively to be applied to a polyolefin or polyolefin copolymer surface of...
- PolyphosphatesCompounds including hexametaphosphate, tripolyphosphate and pyrophosphate which as their sodium salts may be...
- Polypropylene1. Refers to a plastic polymer formed by linking propylene molecules. PP has good resistance to heat and is...
- Polysaccharide vaccineVaccines that are composed of long chains of sugar molecules that resemble the surface of certain types of...
- Polysaccharides13 or more units.
- Polystyrene1. Refers to a plastic polymer formed by linking styrene molecules. PS is used to make a variety of products...
- Polystyrene insulationOrganic foam composed principally of polymerized styrene resin processed to form a homogenous rigid mass of...
- Polystyrene resinThermoplastic polymer or copolymer comprised of at least 80 percent styrene or para-methylstyrene by weight.
- Polysulfide rubberPolymer produced by reacting sodium polysulfide and chloroethyl formal. Polysulfide rubber may be produced as...
- PolytetrafluoroethyleneCommonly known as TeflonTM.
- PolyubiquitinationThe type of ubiquitin modification determines the functional consequences for the modified protein...
- Polyunsaturated fatty acids1. FATTY ACIDS in which the carbon chain contains one or more double or triple carbon-carbon bonds.
- Polyurethane foam systemItem consisting of two transfer pumps that deliver ingredients (polyisocyanate or isocyanate from one side...
- Polyurethane insulationInsulation composed principally of the catalyzed reaction product of polyisocyanates and polyhydroxyl...
- Polyurethane spray foamPolyurethane spray foam is an insulating foam material often used on rooftops. Two liquid components are...
- Polyurethanes1. They are extremely versatile plastics in terms of the forms in which they are available: flexible or rigid...
- Polyvinyl alcoholA polymer prepared from polyvinyl acetates by replacement of the acetate groups with hydroxyl groups. It is...
- Polyvinyl chloride1. Refers to the family of plastic copolymers, also known as vinyl. PVC is used to make products such as...
- Polyvinyl chloride and copolymers production process unitCollection of process components assembled and connected by hard-piping or duct work, used to process raw...
- Polyvinyl chloride copolymerSynthetic thermoplastic polymer that is derived from the simultaneous polymerization of vinyl chloride and...
- Polyvinyl chloride homopolymerSynthetic thermoplastic polymer that is derived from the polymerization of vinyl chloride and has the general...
- Polyvinyl chloride plantAny plant where vinyl chloride alone or in combination with other materials is polymerized.
- Polyvinyl chloride resin gradeSubdivision of PVC resin that describes it as a unique resin, i.e., the most exact description of a type of...
- Polyvinyl chloride-combined process ventProcess vent that originates from a PVCPU and is combined with one or more process vents originating from...
- Polyvinyl chloride-only process ventProcess vent that originates from a PVCPU and is not combined with a process vent originating from another...
- Polyvinylidene chlorideA polyvinyl resin used extensively in the manufacture of plastics, including medical devices, tubing, and...
- Pond1. Small, shallow impoundment of fresh water.
- Pond habitatA naturally confined body of water less than 8 hectares (20 acres) in size, lacking an active wave-formed or...
- Ponds, see Pond
- Pontocerebellar hypoplasia type 2A rare brain developmental disorder caused by mutations in the TSEN54, TSEN2, TSEN34, or SEPSECS gene. The...
- Pool1. Portion of a stream with reduced current velocity, often with deeper water than surrounding areas ans with...
- Pool chemicalPesticide products that are intended to disinfect or sanitize, reducing or mitigating growth or development...
- Pooled estimate of varianceAn estimate of precision derived from different sets of duplicates, calculated as follows: S²dp = S²d1 (n₁ -...
- Pooled insuranceAn insurance pool refers to a group of organizations that insures certain risks, sharing premiums, losses...
- Pooling clauseIn oil and gas leases, a pooling clause, allows the production company to consolidate and combine leased...
- Poor foundation conditionThose areas where features exist which indicate that a natural or man-induced event may result in inadequate...
- Poor motor skillsLack of ability to perform a variety of body movements correctly, using either small muscles for tasks such...
- Populated placePlace or area with clustered or scattered buildings and a permanent human population (city, settlement, town...
- Population1. Group of individual organisms of the same species that occupy particular areas at a given time.
- Population analysisMeasuring and projecting population change, describing the three basic demographic processes (mortality...
- Population at risk1. A population subgroup that is more likely to be exposed to a chemical, or is more sensitive to a chemical...
- Population change modelMathematical model for study of variations in the population of a subject species.
- Population demographicsHuman populations statistic
- Population density1. Describes the population density of the area of a release. This context can describe air, water or ground...
- Population doseThe summation of individual radiation doses received by all those exposed to the source or event being...
- Population estimationClassic survey estimation of population parameters. Such estimates will not reflect spatial configuration...
2,670 of 29,894 terms in Environment terminology (MLC-0121). Request the full dataset.