/ Thesaurus / A Synonyms of allotropism Find synonyms for: Noun1. allotropy, allotropism, chemical phenomenonusage: the phenomenon of an element existing in two or more physical formsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: labyrinth Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language