/ Dictionary / Index S spermatheca: Meaning and Definition of Find definitions for: sper•ma•the•ca Pronunciation: (spûr"mu-thē'ku), [key] — pl. -cae a small sac or cavity in female or hermaphroditic invertebrates used to store sperm for fertilizing eggs, as in the queen bee. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. spermary spermatic Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language