/ Dictionary / Index A astrobiology: Meaning and Definition of Find definitions for: as•tro•bi•ol•o•gy Pronunciation: (as"trō-bī-ol'u-jē), [key] — n. (not in technical use) exobiology. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: astrobiology (Thesaurus) astroarchaeology astrobleme Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language