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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for bio-
before a vowel bi-
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
Medicine definitions for bio-
Life; living organism:biology.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.