Breadcrumb Home > Thesaurus > E Synonyms of exobiology Find synonyms for: Noun 1. exobiology, space biology, astrobiology, biology, biological science usage: the branch of biology concerned with the effects of outer space on living organisms and the search for extraterrestrial life WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of exobiology (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: redoubtable Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language