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Glossary · Nouns · B

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TermTypeDefinitionClassificationsUpdated
Biochemistrynounthe organic chemistry of compounds and processes occurring in organismsverifiedMay 18, 2026
Biochipnouna microchip that uses tiny strands of DNA to latch onto and quickly recognize thousands of genes at a timeverifiedMay 18, 2026
Bioclimatologynounthe study of effects of climate on living organismsverifiedMay 18, 2026
Biodefencenounprocedures involved in taking defensive measures against attacks using biological agentsverifiedMay 18, 2026
Biodefensenounprocedures involved in taking defensive measures against attacks using biological agentsverifiedMay 18, 2026
Biodegradable PollutionnounMWEpollution that is rendered harmless by natural processes and so causes no permanent harmverifiedMay 18, 2026
Biodiversitynounthe diversity of plant and animal life in a particular habitat (or in the world as a whole)verifiedMay 18, 2026
Bioelectricitynounelectric phenomena in animals or plantsverifiedMay 18, 2026
Bioengineeringnounthe branch of engineering science in which biological science is used to study the relation between workers and their environmentsverifiedMay 18, 2026
Bioethicsnounthe branch of ethics that studies moral values in the biomedical sciencesverifiedMay 18, 2026
Biofeedbacknouna training program in which a person is given information about physiological processes, such as heart rate or blood pressure, that is not normally available with the goal of gaining conscious control of themverifiedMay 18, 2026
Bioflavinoidnouna vitamin that maintains the resistance of cell and capillary walls to permeationverifiedMay 18, 2026
Biogenesisnounthe production of living organisms from other living organismsverifiedMay 18, 2026
Biogenynounthe production of living organisms from other living organismsverifiedMay 18, 2026
Biogeographical RegionnounMWEan area of the Earth determined by distribution of flora and faunaverifiedMay 18, 2026
Biogeographynoundealing with the geographical distribution of animals and plantsverifiedMay 18, 2026
Biographernounsomeone who writes an account of a person's lifeverifiedMay 18, 2026
Biographynounan account of the series of events making up a person's lifeverifiedMay 18, 2026
Biohazardnounhazard to humans or the environment resulting from biological agents or conditionsverifiedMay 18, 2026
Biohazard SuitnounMWEa loose one-piece garment worn to protect the wearer against dangerous biological or chemical agentsverifiedMay 18, 2026
Biologic AttacknounMWEthe use of bacteria or viruses or toxins to destroy men and animals or foodverifiedMay 18, 2026
Biological AgentnounMWEany bacterium or virus or toxin that could be used in biological warfareverifiedMay 18, 2026
Biological AttacknounMWEthe use of bacteria or viruses or toxins to destroy men and animals or foodverifiedMay 18, 2026
Biological ClocknounMWEan innate mechanism in living organisms that controls the periodicity of many physiological functionsverifiedMay 18, 2026
Biological DefencenounMWEprocedures involved in taking defensive measures against attacks using biological agentsverifiedMay 18, 2026
Biological DefensenounMWEprocedures involved in taking defensive measures against attacks using biological agentsverifiedMay 18, 2026
Biological GroupnounMWEa group of plants or animalsverifiedMay 18, 2026
Biological ProcessnounMWEa process occurring in living organismsverifiedMay 18, 2026
Biological ResearchnounMWEscientific research conducted by biologistsverifiedMay 18, 2026
Biological SciencenounMWEthe science that studies living organismsverifiedMay 18, 2026
Biological TerrorismnounMWEterrorism using the weapons of biological warfareverifiedMay 18, 2026
Biological TimenounMWEthe time of various biological processesverifiedMay 18, 2026
Biological WarfarenounMWEthe use of bacteria or viruses or toxins to destroy men and animals or foodverifiedMay 18, 2026
Biological Warfare DefencenounMWEdefense against biological warfareverifiedMay 18, 2026
Biological Warfare DefensenounMWEdefense against biological warfareverifiedMay 18, 2026
Biological WeaponnounMWEany weapon usable in biological warfareverifiedMay 18, 2026
Biologismnounuse of biological principles in explaining human especially social behaviorverifiedMay 18, 2026
Biologistnouna scientist who studies living organismsverifiedMay 18, 2026
Biologynouncharacteristic life processes and phenomena of living organismsverifiedMay 18, 2026
Bioluminescencenounluminescence produced by physiological processes (as in the firefly)verifiedMay 18, 2026
Biomassnounthe total mass of living matter in a given unit areaverifiedMay 18, 2026
Biomenouna major biotic community characterized by the dominant forms of plant life and the prevailing climateverifiedMay 18, 2026
Biomedical CloningnounMWEnuclear transplantation of a patient's own cells to make an oocyte from which immune-compatible cells, especially stem cells, can be derived for transplantverifiedMay 18, 2026
Biomedical SciencenounMWEthe application of the principles of the natural sciences to medicineverifiedMay 18, 2026
Biomedicinenounthe branch of medical science that studies the ability of organisms to withstand environmental stress (as in space travel)verifiedMay 18, 2026
BiometricnounA measurable physical characteristic or personal behavioral trait used to recognize the identity, or verify the claimed identity, of an applicant. Facial images, fingerprints, and iris scan samples are all examples of biometrics.CredentialMay 9, 2026
Biometric AuthenticationnounMWEthe automatic identification of living individuals by using their physiological and behavioral characteristicsverifiedMay 18, 2026
Biometric DatanounMWEan individual’s physiological, biological, or behavioral characteristics, including information pertaining to an individual’s deoxyribonucleic acid (DNA), that is used or is intended to be used singly or in combination with each other or with other identifying data, to establish individual identity. Biometric information includes, but is not limited to, imagery of the iris, retina, fingerprint, face, hand, palm, vein patterns, and voice recordings, from which an identifier template, such as a faceprint, a minutiae template, or a voiceprint, can be extracted, and keystroke patterns or rhythms, gait patterns or rhythms, and sleep, health, or exercise data that contain identifying information.CredentialRegulatedPIIMay 18, 2026
Biometric IdentificationnounMWEthe automatic identification of living individuals by using their physiological and behavioral characteristicsverifiedMay 18, 2026
Biometric InformationnounMWEThe stored electronic information pertaining to a biometric. This information can be in terms of raw or compressed pixels or in terms of some characteristic (e.g., patterns.)CredentialMay 9, 2026
Biometric SystemnounMWEAn automated system capable of: 1) capturing a biometric sample from an end user; 2) extracting biometric data from that sample; 3) comparing the extracted biometric data with data contained in one or more references; 4) deciding how well they match; and 5) indicating whether or not an identification or verification of identity has been achieved.CredentialMay 9, 2026
Biometrynouna branch of biology that studies biological phenomena and observations by means of statistical analysisverifiedMay 18, 2026
Bionic MannounMWEa human being whose body has been taken over in whole or in part by electromechanical devicesverifiedMay 18, 2026
Bionic WomannounMWEa human being whose body has been taken over in whole or in part by electromechanical devicesverifiedMay 18, 2026
Bionicsnounapplication of biological principles to the study and design of engineering systems (especially electronic systems)verifiedMay 18, 2026
Bionomicsnounthe branch of biology concerned with the relations between organisms and their environmentverifiedMay 18, 2026
Biontnouna discrete unit of living matterverifiedMay 18, 2026
Biophysicistnouna physicist who applies the methods of physics to biologyverifiedMay 18, 2026
Biophysicsnounphysics as applied to biological problemsverifiedMay 18, 2026
Biopiracynounbiological theftverifiedMay 18, 2026
Biopsynounexamination of tissues or liquids from the living body to determine the existence or cause of a diseaseverifiedMay 18, 2026
Bioremediationnounthe act of treating waste or pollutants by the use of microorganisms (as bacteria) that can break down the undesirable substancesverifiedMay 18, 2026
Biosafetynounsafety from exposure to infectious agentsverifiedMay 18, 2026
Biosafety LevelnounMWEthe level of safety from exposure to infectious agentsverifiedMay 18, 2026
Biosafety Level 1nounMWEexposure only to infectious agents that do not ordinarily cause human diseaseverifiedMay 18, 2026
Biosafety Level 2nounMWEexposure to infectious agents that can cause disease in humans but whose potential for transmission is limitedverifiedMay 18, 2026
Biosafety Level 3nounMWEexposure to infectious agents that can be transmitted by the respiratory route and which can cause serious infectionverifiedMay 18, 2026
Biosafety Level 4nounMWEexposure to exotic infectious agents that pose a high risk of life-threatening disease and can be transmitted as an aerosol and for which there is no vaccine or therapyverifiedMay 18, 2026
Biosciencenounany of the branches of natural science dealing with the structure and behavior of living organismsverifiedMay 18, 2026
Bioscopenouna kind of early movie projectorverifiedMay 18, 2026
Biospherenounthe regions of the surface and atmosphere of the Earth (or other planet) where living organisms existverifiedMay 18, 2026
Biostatisticsnouna branch of biology that studies biological phenomena and observations by means of statistical analysisverifiedMay 18, 2026
Biosynthesisnounproduction of a chemical compound by a living organismverifiedMay 18, 2026
Biosystematicsnounuse of data (e.g. cytogenetic or biochemical) to assess taxonomic relations especially within an evolutionary frameworkverifiedMay 18, 2026
Biosystematynounuse of data (e.g. cytogenetic or biochemical) to assess taxonomic relations especially within an evolutionary frameworkverifiedMay 18, 2026
Biotanounall the plant and animal life of a particular regionverifiedMay 18, 2026
Biotechnounthe branch of molecular biology that studies the use of microorganisms to perform specific industrial processesverifiedMay 18, 2026
Biotechnologynounthe branch of engineering science in which biological science is used to study the relation between workers and their environmentsverifiedMay 18, 2026
Bioterrorismnounterrorism using the weapons of biological warfareverifiedMay 18, 2026
Biotic CommunitynounMWE(ecology) a group of interdependent organisms inhabiting the same region and interacting with each otherverifiedMay 18, 2026
Biotinnouna B vitamin that aids in body growthverifiedMay 18, 2026
Biotitenoundark brown to black mica found in igneous and metamorphic rockverifiedMay 18, 2026
Biotypenounorganisms sharing a specified genotype or the genotype (or peculiarities) so sharedverifiedMay 18, 2026
Bioweaponnounany weapon usable in biological warfareverifiedMay 18, 2026
Bipedalismnounthe bodily attribute of being bipedalverifiedMay 18, 2026
Bipinnate LeafnounMWEa leaf having pinnate leafletsverifiedMay 18, 2026
Biplanenounold fashioned airplaneverifiedMay 18, 2026
Biplane Flying FishnounMWEhaving both pectoral and pelvic fins enlargedverifiedMay 18, 2026
Bipolar DisordernounMWEa mental disorder characterized by episodes of mania and depressionverifiedMay 18, 2026
Biprismnounan optical device for obtaining interference fringesverifiedMay 18, 2026
Biquadratenounan algebraic equation of the fourth degreeverifiedMay 18, 2026
Biquadratic EquationnounMWEan equation of the fourth degreeverifiedMay 18, 2026
Biquadratic PolynomialnounMWEa polynomial of the fourth degreeverifiedMay 18, 2026
Birch BeernounMWEcarbonated drink containing an extract from bark of birch treesverifiedMay 18, 2026
Birch FamilynounMWEmonoecious trees and shrubs (including the genera Betula and Alnus and Carpinus and Corylus and Ostrya and Ostryopsis)verifiedMay 18, 2026
Birch Leaf MinernounMWEsmall black sawfly native to Europe but established in eastern United StatesverifiedMay 18, 2026
Birch OilnounMWEa liquid ester with a strong odor of wintergreenverifiedMay 18, 2026
Birch RodnounMWEa switch consisting of a twig or a bundle of twigs from a birch treeverifiedMay 18, 2026
Birch TreenounMWEany betulaceous tree or shrub of the genus Betula having a thin peeling barkverifiedMay 18, 2026
Birchbarknouna canoe made with the bark of a birch treeverifiedMay 18, 2026