/ Thesaurus / G Synonyms of genus ulva Find synonyms for: Noun1. Ulva, genus Ulva, protoctist genususage: type genus of the family Ulvaceae; green seaweed having a thallus two cells thick: sea lettuceWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: cur Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language