Breadcrumb Home > Thesaurus > F Synonyms of foucault Find synonyms for: Noun 1. Foucault, Jean Bernard Leon Foucault usage: French physicist who determined the speed of light and showed that it travels slower in water than in air; invented the Foucault pendulum and the gyroscope (1819-1868) WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of foucault (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: meretricious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language