/ Thesaurus / U Synonyms of uranium 235 Find synonyms for: Noun1. uranium 235, uranium, U, atomic number 92usage: a uranium isotope with mass number 235; capable of sustaining chain reactionsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language