Breadcrumb Home > Thesaurus > C Synonyms of caesium Find synonyms for: Noun 1. cesium, caesium, Cs, atomic number 55, metallic element, metal usage: a soft silver-white ductile metallic element (liquid at normal temperatures); the most electropositive and alkaline metal WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of caesium (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: soupon Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language