Breadcrumb Home > Thesaurus > E Synonyms of eutherian Find synonyms for: Noun 1. placental, placental mammal, eutherian, eutherian mammal, mammal, mammalian usage: mammals having a placenta; all mammals except monotremes and marsupials Adjective 1. eutherian usage: of or relating to or belonging to the subclass Eutheria; "eutherian mammals" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of eutherian (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: antecedent Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language