/ Dictionary / Index P prebiological: Meaning and Definition of Find definitions for: pre•bi•o•log•i•cal Pronunciation: (prē"bī-u-loj'i-kul), [key] — adj. of or pertaining to chemicals or environmental conditions existing before the development of the first living things. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. prebendary prebirth Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language