Breadcrumb Home > Thesaurus > R Synonyms of rg Find synonyms for: Noun 1. roentgenium, Rg, element 111, atomic number 111, chemical element, element usage: a radioactive transuranic element WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of rg (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: serendipity Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language