noun, plural bi·os.


biological: a bio control service using praying mantises to reduce the population of garden pests.

Origin of bio

1945–50; by shortening; as adj., independent use of bio-, taken as a free form


a combining form meaning “life” occurring in loanwords from Greek (biography); on this model, used in the formation of compound words (bioluminescence).
Also especially before a vowel, bi-.

Origin of bio-

combining form of Greek bíos life; akin to Latin vīvus living, Sanskrit jīvas. See quick Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for bio

Contemporary Examples of bio

Historical Examples of bio

  • I reserve for myself the command of the army of the Bio Bio.

  • But the Bio Bio had to be crossed, and there lay the difficulty.

  • "The bio team stole all the weapons," MacFarland said without preamble.

  • The bio- and psycho-sciences were completely outside his field.


    H. Beam Piper

  • The botanist helped Cleve and me set up the bio kit, and he confirmed Cleve's guess.


    Winston Marks

British Dictionary definitions for bio


noun plural bios

short for biography


before a vowel bi-

combining form

indicating or involving life or living organismsbiogenesis; biolysis
indicating a human life or careerbiography; biopic

Word Origin for bio-

from Greek bios life
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for bio

short for biography, attested from 1961.


word-forming element, from Greek bio-, comb. form of bios "one's life, course or way of living, lifetime" (as opposed to zoe "animal life, organic life"), from PIE root *gweie- "to live" (cf. Sanskrit jivah "alive, living;" Old English cwic "alive;" Latin vivus "living, alive," vita "life;" Middle Persian zhiwak "alive;" Old Church Slavonic zivo "to live;" Lithuanian gyvas "living, alive;" Old Irish bethu "life," bith "age;" Welsh byd "world"). Equivalent of Latin vita. The correct usage is that in biography, but in modern science it has been extended to mean "organic life."

Online Etymology Dictionary, © 2010 Douglas Harper

bio in Medicine



Life; living organism:biology.
Biology; biological:biophysics.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.