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sper·ma·the·ca | \ ˌspər-mə-ˈthē-kə 
\
\ plural spermathecae\ ˌspər-mə-ˈthē-ˌsē. -ˌkē \
\Definition of spermatheca
: a sac for sperm storage in the female reproductive tract of various lower animals and especially insects
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Time Traveler for spermatheca
The first known use of spermatheca was in 1826
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