/ Thesaurus / A Synonyms of atomic reactor Find synonyms for: Noun1. atomic pile, atomic reactor, pile, chain reactor, nuclear reactor, reactorusage: a nuclear reactor that uses controlled nuclear fission to generate energyWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language