Breadcrumb Home > Thesaurus > A Synonyms of astronomical Find synonyms for: Adjective 1. astronomic, astronomical usage: relating or belonging to the science of astronomy; "astronomic telescope" 2. astronomic, astronomical, galactic, large (vs. small), big (vs. little) usage: inconceivably large WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of astronomical (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: deleterious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language