Breadcrumb Home > Thesaurus > P Synonyms of proliferation Find synonyms for: Noun 1. proliferation, growth, growing, maturation, development, ontogeny, ontogenesis usage: growth by the rapid multiplication of parts 2. proliferation, increase, increment, growth usage: a rapid increase in number (especially a rapid increase in the number of deadly weapons); "the proliferation of nuclear weapons" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of proliferation (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: rapacious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language