/ Thesaurus / D Synonyms of defoliation Find synonyms for: Noun1. defoliation, organic process, biological processusage: the loss of foliage2. defoliation, change of stateusage: causing the leaves of trees and other plants to fall off (as by the use of chemicals)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: candor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language