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[bahy-oh] /ˈbaɪ oʊ/ Informal.
noun, plural bios.
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-.
combining form of Greek bíos life; akin to Latin vīvus living, Sanskrit jīvas. See quick Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for bio
Contemporary Examples
Historical Examples
  • I reserve for myself the command of the army of the bio bio.

    The Pearl of the Andes Gustave Aimard
  • But the bio bio had to be crossed, and there lay the difficulty.

    The Pearl of the Andes Gustave Aimard
  • "The bio team stole all the weapons," MacFarland said without preamble.

    The Unprotected Species Melvin Sturgis
  • The bio- and psycho-sciences were completely outside his field.

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

    Tabby Winston Marks
British Dictionary definitions for bio


noun (pl) bios
short for biography


combining form
indicating or involving life or living organisms: biogenesis, biolysis
indicating a human life or career: biography, biopic
Word Origin
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
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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
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bio in Medicine

bio- or bi-

  1. Life; living organism: biology.

  2. Biology; biological: biophysics.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Slang definitions & phrases for bio



A biography, esp a brief one in a yearbook, theater program, etc: By now Jenny had read my bio in the program ( first form 1950s+, second 1940s+)

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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