Pronunciation: (bī'ō), [key]
—n., pl. bi•os,
2. biological: a bio control service using praying mantises to reduce the population of garden pests.
a combining form meaning “life” occurring in loanwords from Greek (biography); on this model, used in the formation of compound words (bioluminescence). Also, esp. before a vowel,bi-.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.