Breadcrumb Home > Thesaurus > E Synonyms of eureka Find synonyms for: Noun 1. constantan, Eureka, copper-base alloy usage: an alloy of copper and nickel with high electrical resistance and a low temperature coefficient; used as resistance wire 2. Eureka usage: a town in northwest California on an arm of the Pacific Ocean WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of eureka (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: oungurk Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language