Breadcrumb Home > Thesaurus > P Synonyms of plutonic Find synonyms for: Adjective 1. irruptive, plutonic, intrusive (vs. extrusive) usage: of igneous rock that has solidified beneath the earth's surface; granite or diorite or gabbro WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of plutonic (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: temporize Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language