Breadcrumb Home > Thesaurus > D Synonyms of dilation Find synonyms for: Noun 1. dilation, discussion, treatment, discourse usage: a lengthy discussion (spoken or written) on a particular topic 2. dilation, dilatation, expansion, enlargement usage: the act of expanding an aperture; "the dilation of the pupil of the eye" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of dilation (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: suigeneris Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language