Breadcrumb Home > Thesaurus > D Synonyms of dewar Find synonyms for: Noun 1. Dewar flask, Dewar, vacuum flask, vacuum bottle usage: vacuum flask that holds liquid air or helium for scientific experiments 2. Dewar, Sir James Dewar usage: Scottish chemist and physicist noted for his work in cryogenics and his invention of the Dewar flask (1842-1923) WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of dewar (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: locution Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language