<B>biogas, </B>noun.<DL COMPACT><DD> a mixture of methane and carbon dioxide produced by bacterial action on organic waste matter, used as a form of fuel. </DL>
<A NAME="biogen">
<B>biogen, </B>noun.<DL COMPACT><DD> a hypothetical molecule of protein, at one time thought to be the basic cellular constituent of living substance. </DL>
<A NAME="biogenesis">
<B>biogenesis, </B>noun.<DL COMPACT><DD><B> 1. </B>the theory that living things can be produced only by other living things. <DD><B> 2. </B>the genesis or production of living things from other living things. <DD><B> 3. </B>the history of the evolution of living organisms. </DL>
<A NAME="biogenetic">
<B>biogenetic, </B>adjective.<DL COMPACT><DD> of or having to do with biogenesis. adv. <B>biogenetically.</B> </DL>
<A NAME="biogenetical">
<B>biogenetical, </B>adjective. =biogenetic.</DL>
<A NAME="biogenic">
<B>biogenic, </B>adjective.<DL COMPACT><DD> produced by living organisms, as certain marine sediments. </DL>
<A NAME="biogenous">
<B>biogenous, </B>adjective.<DL COMPACT><DD> (Biology.) <DD><B> 1. </B>coming from living things. <DD><B> 2. </B>giving life. </DL>
<A NAME="biogeny">
<B>biogeny, </B>noun. =biogenesis.</DL>
<A NAME="biogeochemical">
<B>biogeochemical, </B>adjective.<DL COMPACT><DD> of or having to do with biogeochemistry. </DL>
<A NAME="biogeochemistry">
<B>biogeochemistry, </B>noun.<DL COMPACT><DD> the study of the effect of the earth's chemical composition upon living things. </DL>
<A NAME="biogeographer">
<B>biogeographer, </B>noun.<DL COMPACT><DD> a person who studies biogeography. </DL>
<B>biogeographical, </B>adjective.<DL COMPACT><DD> of or having to do with biogeography. </DL>
<A NAME="biogeography">
<B>biogeography, </B>noun.<DL COMPACT><DD> the science of the distribution of animals and plants. </DL>
<A NAME="biogerontology">
<B>biogerontology, </B>noun.<DL COMPACT><DD> the study of the biology of aging. <BR> <I>Ex. [Leonard] Hayflick delineates the field of biogerontology, ... provides statistical data on aging, shows how humans age ... and explores the possibilities for manipulating the life span (Science News).</I> </DL>
<B>biograph</B> (2), noun.<DL COMPACT><DD> an early form of movie projector. </DL>
<A NAME="biographee">
<B>biographee, </B>noun.<DL COMPACT><DD> the subject of a biography. </DL>
<A NAME="biographer">
<B>biographer, </B>noun.<DL COMPACT><DD> a person who writes someone's biography. </DL>
<A NAME="biographic">
<B>biographic, </B>adjective. =biographical.</DL>
<A NAME="biographical">
<B>biographical, </B>adjective.<DL COMPACT><DD><B> 1. </B>of a person's life. <BR> <I>Ex. biographical details.</I> <DD><B> 2. </B>of or having to do with biography. adv. <B>biographically.</B> </DL>
<A NAME="biographize">
<B>biographize, </B>transitive verb, <B>-phized,</B> <B>-phizing.</B><DL COMPACT><DD> to write a biography of (a person). </DL>
<A NAME="biography">
<B>biography, </B>noun, pl. <B>-phies.</B><DL COMPACT><DD><B> 1. </B>the written story of a person's life. <BR> <I>Ex. After reading a biography of Lincoln he was able to tell many stories about the President.</I> <DD><B> 2. </B>(Figurative:) <BR> <I>Ex. Don MacKinnon ... knew the biography of every piece of ground in the area (Maclean's).</I> <DD><B> 3. </B>part of literature which consists of biographies. <BR> <I>Ex. Read ... nothing but biography, for that is life without theory (Benjamin Disraeli).</I> </DL>
<A NAME="biohazard">
<B>biohazard, </B>noun.<DL COMPACT><DD> any danger or peril resulting from biological research. </DL>
<A NAME="bioherm">
<B>bioherm, </B>noun.<DL COMPACT><DD> a rock formation mainly built up by marine organisms, such as coral, overlaid or enclosed by another rock. </DL>
<A NAME="bioinstrumentation">
<B>bioinstrumentation, </B>noun.<DL COMPACT><DD> the use of biosensors and other instruments for recording and transmitting data on the bodily changes of persons or animals. </DL>
<B>biological, </B>adjective, noun.<DL COMPACT><DD><I>adj. </I> <B>1. </B>of plant and animal life; connected with the processes of life. <BR> <I>Ex. biological science.</I> <DD><B> 2. </B>having to do with biology. <BR> <I>Ex. a biological laboratory.</I> <DD><B> 3. </B>for use in or prepared by a biological laboratory. <BR> <I>Ex. biological serums.</I> <DD><B> 4. </B>involving the use of living organisms, such as disease germs or viruses, against an enemy. <BR> <I>Ex. biological weapons.</I> <DD><I>noun </I> a drug or other product prepared from living organisms. adv. <B>biologically.</B> </DL>
<A NAME="biologicalclock">
<B>biological clock,</B><DL COMPACT><DD> a mechanism in plants and animals which controls the rhythm of functions and activities, such as photosynthesis in a plant. </DL>
<A NAME="biologicalcontrol">
<B>biological control,</B><DL COMPACT><DD> the reduction of plant or insect pests by parasitic organisms or animals, such as the control of mosquitoes by birds. </DL>
<A NAME="biologicalengineering">
<B>biological engineering,</B><DL COMPACT><DD> the artificial selection of different strains of a plant or animal species to improve the structure, function, or yield of an organism, especially one of agricultural importance. </DL>
<A NAME="biologicalhalflife">
<B>biological half-life,</B><DL COMPACT><DD> the time required for a substance deposited in a living organism, tissue, or organ to lose half its initial value through elimination by biological processes. </DL>
<A NAME="biologicalwarfare">
<B>biological warfare,</B><DL COMPACT><DD> warfare in which disease germs and other harmful organisms are used against persons, animals, or crops; germ warfare. </DL>
<A NAME="biologism">
<B>biologism, </B>noun.<DL COMPACT><DD><B> 1. </B>a doctrine insisting upon the interpretation of all human experience from the biological point of view or by biological methods. <DD><B> 2. </B>support of such a doctrine. </DL>
<A NAME="biologist">
<B>biologist, </B>noun.<DL COMPACT><DD> a person who studies biology. </DL>
<A NAME="biologize">
<B>biologize, </B>intransitive verb, transitive verb, <B>-gized,</B> <B>-gizing.</B><DL COMPACT><DD><B> 1. </B>to study biologically. <DD><B> 2. </B>(Obsolete.) to hypnotize. </DL>
<A NAME="biology">
<B>biology, </B>noun.<DL COMPACT><DD><B> 1. </B>the science of living things; study of plant and animal life. Specialists in biology study the origin, structure, functioning, activities, and distribution of plant and animal life. Botany, zoology, and ecology are branches of biology. (Abbr:) biol. <DD><B> 2. </B>the plant and animal life of a particular area or region. <DD><B> 3. </B>the biological facts about a plant or animal. </DL>
<A NAME="bioluminescence">
<B>bioluminescence, </B>noun.<DL COMPACT><DD> phosphorescence or other emission of light by living organisms, such as fireflies and jellyfish. </DL>
<B>biolysis, </B>noun.<DL COMPACT><DD> the dissolution of a living being; death. </DL>
<A NAME="biolytic">
<B>biolytic, </B>adjective.<DL COMPACT><DD><B> 1. </B>of or having to do with biolysis. <DD><B> 2. </B>resembling biolysis. </DL>
<A NAME="biomagnification">
<B>biomagnification, </B>noun.<DL COMPACT><DD> the increase in the concentration of toxic chemicals with each new link in the food chain. </DL>
<A NAME="biomagnify">
<B>biomagnify, </B>intransitive verb, <B>-fied,</B> <B>-fying.</B><DL COMPACT><DD> to undergo biomagnification. </DL>
<A NAME="biomass">
<B>biomass, </B>noun.<DL COMPACT><DD><B> 1. </B>the total mass or weight of living material in a unit of area. <DD><B> 2. </B>plant material or vegetation, especially as a source of fuel or energy. </DL>
<A NAME="biomathematician">
<B>biomathematician, </B>noun.<DL COMPACT><DD> a specialist in the mathematical study of biological processes, especially the simulation of such processes by mathematical models. </DL>
<A NAME="biomathematics">
<B>biomathematics, </B>noun.<DL COMPACT><DD> the application of mathematical principles to biological or medical studies. </DL>
<A NAME="biome">
<B>biome, </B>noun.<DL COMPACT><DD> a natural community of plants and animals, its composition being largely controlled by climatic conditions. </DL>
<A NAME="biomechanical">
<B>biomechanical, </B>adjective.<DL COMPACT><DD> of or having to do with biomechanics. </DL>
<A NAME="biomechanics">
<B>biomechanics, </B>noun.<DL COMPACT><DD> science that deals with the effects of forces on the living organism, especially forces applied to the skeleton by gravity and the system of muscles. </DL>
<A NAME="biomedical">
<B>biomedical, </B>adjective.<DL COMPACT><DD><B> 1. </B>of or having to do with both biology and medicine. <DD><B> 2. </B>of or having to do with biomedicine. </DL>
<B>biomedicine, </B>noun.<DL COMPACT><DD> the biological and medical study of human tolerance to environmental stresses, especially in space travel. </DL>
<B>biometric, </B>adjective.<DL COMPACT><DD> of or having to do with biometry. adv. <B>biometrically.</B> </DL>
<A NAME="biometrical">
<B>biometrical, </B>adjective. =biometric.</DL>
<A NAME="biometrician">
<B>biometrician, </B>noun.<DL COMPACT><DD> a person who studies biometrics. </DL>
<A NAME="biometrics">
<B>biometrics, </B>noun.<DL COMPACT><DD> the branch of biology that deals with living things by measurements and statistics. </DL>
<A NAME="biometrist">
<B>biometrist, </B>noun. =biometrician.</DL>
<A NAME="biometry">
<B>biometry, </B>noun.<DL COMPACT><DD><B> 1. </B>the measurement of life; calculation of the average duration and probable expectation of human life. <DD><B> 2. </B><B>=biometrics.</B> </DL>
<A NAME="biomolecule">
<B>biomolecule, </B>noun.<DL COMPACT><DD> a hypothetical molecule of living matter; the smallest quantity of matter exhibiting life. </DL>
<A NAME="biomorph">
<B>biomorph, </B>noun.<DL COMPACT><DD> (in art) a lifelike form. </DL>
