/ Thesaurus / G Synonyms of genus mesembryanthemum Find synonyms for: Noun1. Mesembryanthemum, genus Mesembryanthemum, caryophylloid dicot genususage: South African annual or biennial plants having flowers that open only in bright sunlightWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language