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— bio·de·grade verb

bio·di·ver·si·ty noun : biological diversity in an environment as indicated by numbers of different species of plants and animals

bio·en·gi·neer·ing noun 1 : the application of engineering principles to medicine and biology

2 : GENETIC ENGINEERING

bio·eth·ics noun : the ethics of biological research and its applications esp. in medicine

— bio·eth·i·cal adjective

— bio·eth·i·cist noun

bio·feed·back noun : the technique of making unconscious or involuntary bodily processes (as heartbeats or brain waves) objectively perceptible to the senses (as by use of an oscilloscope) in order to manipulate them by conscious mental control

biog abbreviation biographer; biographical; biography

bio·ge·og·ra·phy noun : a science that deals with the geographical distribution of plants and animals

— bio·ge·og·ra·pher noun

bi·og·ra·phy noun, plural -phies : a written history of a person's life; also : such writings in general

— bi·og·ra·pher noun

— bi·o·graph·i·cal also bi·o·graph·ic adjective

biol abbreviation biologic; biological; biologist; biology

bi·o·log·i·cal also bi·o·log·ic adjective 1 : of, relating to, or produced by biology or life and living processes

2 : related by direct genetic relationship rather than by adoption or marriage <~ parents>

— bi·o·log·i·cal·ly adverb

biological clock noun : an inherent timing mechanism in a living system that is inferred to exist in order to explain the timing of various physiological and behavioral states and processes

biological warfare noun : warfare in which harmful living organisms (biological weapons) are used against an enemy esp. to cause large-scale death and disease

bi·ol·o·gy noun [ORIGIN: G Biologie, fr. Gk bios mode of life + logos word, discourse]

1 : a science that deals with living beings and life processes

2 : the life processes of an organism or group

— bi·ol·o·gist noun

bio·mass noun 1 : the amount of living matter (as in a unit area)

2 : plant materials and animal waste used esp. as fuel

bio·med·i·cal adjective : of, relating to, or involving biological, medical, and physical science

bi·on·ic adjective : having normal biological capability or performance enhanced by or as if by electronic or mechanical devices

bio·phys·ics noun : a branch of science concerned with the application of physical principles and methods to biological problems

— bio·phys·i·cal adjective

— bio·phys·i·cist noun

bi·op·sy noun, plural -sies : the removal of tissue, cells, or fluids from the living body for examination

bio·rhythm noun : an innately determined rhythmic biological process (as sleep); also : the internal mechanism controlling such a process

bio·sphere noun 1 : the part of the world in which life can exist

2 : living beings together with their environment

bio·tech noun : BIOTECHNOLOGY

bio·tech·nol·ogy noun : biological science when applied esp. in genetic engineering and recombinant DNA technology

bio·ter·ror·ism noun : terrorism involving the use of biological weapons

bi·ot·ic adjective : of or relating to life; especially : caused by living beings

bi·o·tin noun : a vitamin of the vitamin B complex found esp. in yeast, liver, and egg yolk and active in growth promotion

bi·o·tite noun : a dark mica containing iron, magnesium, potassium, and aluminum

bi·par·ti·san adjective : marked by or involving cooperation, agreement, and compromise between two major political parties

— bi·par·ti·san·ship noun

bi·par·tite adjective 1 : being in two parts

2 : shared by two <~ treaty>

Synonyms

binary, double, dual, duplex, twin—more at DOUBLE

bi·ped noun : a 2-footed animal

— bi·ped·al adjective

bi·plane noun : an aircraft with two wings placed one above the other

bi·po·lar adjective : having or involving the use of two poles

— bi·po·lar·i·ty noun

bipolar disorder noun : any of several psychological disorders of mood characterized by usu. alternating episodes of depression and mania

bi·ra