Breadcrumb Home > Thesaurus > T Synonyms of theca Find synonyms for: Noun 1. theca, sac, covering, natural covering, cover usage: a case or sheath especially a pollen sac or moss capsule 2. theca, sheath, case usage: outer sheath of the pupa of certain insects WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of theca (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: terrafirma Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language