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bioflavonoid any of a group of yellow hydrocarbon pigments found in many flowers and fruits, once thought to be important as a vitamin in humans; vitamin P.
biogas any gaseous fuel produced by the bacterial decomposition of organic matter, composed primarily of methane and carbon dioxide.
biogenesis the principle that living organisms are generated only by other living organisms. [2 definitions]
biogeography the study of the geographic distribution of living organisms.
biographer a person who writes biography.
biographical of or relating to the facts and circumstances of a person's life. [2 definitions]
biography an account, usu. written, of the facts and circumstances of one person's life. [3 definitions]
biohazard a biological substance or condition that endangers human life or health.
bioinformatics the analysis of biological data, such as DNA or protein sequences, using computers. [2 definitions]
biological of or pertaining to biology.
biological warfare the use of living organisms such as bacteria or viruses to kill or disable people or destroy their food supply.
biologist a scientist who specializes in biology.
biology the science that is concerned with the growth, development, and functioning of living things. [3 definitions]
bioluminescence the emission of light produced naturally by certain kinds of insects, fish, or bacteria, or such light itself.
biomagnetism the scientific study of the effects of magnetic forces on biological systems.
biomass the quantity of living matter in a particular habitat measured by weight of organisms per unit of habitat area or by weight or volume of organisms per unit of habitat volume.
biomedicine the branch of medicine concerned with human survival and functioning in abnormal environmental conditions.
biometrics (used with a sing. verb) the mathematical and statistical analysis of biological data.
bionic consisting of or supplemented by electronic or mechanical devices. [3 definitions]
bionics (used with a sing. verb) the application of biological functions and mechanisms to the study and design of engineering devices and systems.
biopharmaceutical a drug extracted from a biological source, or a derivative of such a drug.