Breadcrumb Home > Thesaurus > S Synonyms of supercritical Find synonyms for: Adjective 1. supercritical, critical (vs. noncritical) usage: (especially of fissionable material) able to sustain a chain reaction in such a manner that the rate of reaction increases WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of supercritical (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: demagogue Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language