/ Thesaurus / S Synonyms of space biology Find synonyms for: Noun1. exobiology, space biology, astrobiology, biology, biological scienceusage: the branch of biology concerned with the effects of outer space on living organisms and the search for extraterrestrial lifeWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language