Breadcrumb Home > Thesaurus > R Synonyms of radium Find synonyms for: Noun 1. radium, Ra, atomic number 88, metallic element, metal usage: an intensely radioactive metallic element that occurs in minute amounts in uranium ores WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of radium (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: procellous Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language