WordReference Random House Unabridged Dictionary of American English © 2026
sper•ma•the•ca
(spûr′mə thē′kə),USA pronunciation n., pl. -cae (-sē).USA pronunciation [Zool.]
- Invertebrates, Zoologya small sac or cavity in female or hermaphroditic invertebrates used to store sperm for fertilizing eggs, as in the queen bee.
- sperma- (variant of spermato-, spermo-) + theca 1820–30