Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun theca

2 senses of theca

Sense 1
theca, sac -- (a case or sheath especially a pollen sac or moss capsule)
       => covering, natural covering, cover -- (a natural object that covers or envelops; "under a covering of dust"; "the fox was flushed from its cover")

Sense 2
theca -- (outer sheath of the pupa of certain insects)
       => sheath, case -- (an enveloping structure or covering enclosing an animal or plant organ or part)