/ Thesaurus / A Synonyms of adaptive radiation Find synonyms for: Noun1. adaptive radiation, radiationusage: the development of many different forms from an originally homogeneous group of organisms as they fill different ecological nichesWordNet 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