Breadcrumb Home > Thesaurus > D Synonyms of dirac Find synonyms for: Noun 1. Dirac, Paul Adrien Maurice Dirac usage: English theoretical physicist who applied relativity theory to quantum mechanics and predicted the existence of antimatter and the positron (1902-1984) WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of dirac (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: suigeneris Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language