/ Thesaurus / S Synonyms of spore case Find synonyms for: Noun1. sporangium, spore case, spore sac, reproductive structureusage: organ containing or producing spores2. sporocarp, spore case, reproductive structureusage: specialized leaf branch in certain aquatic ferns that encloses the sori or clusters of sporangiaWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language