Breadcrumb Home > Thesaurus > R Synonyms of radioisotope Find synonyms for: Noun 1. radioisotope, isotope usage: a radioactive isotope of an element; produced either naturally or artificially WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of radioisotope (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: felicitous Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language