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epigynum

noun
epig·​y·​num | \ -nəm\
variants: or less commonly epigyne \ ˈepəˌjīn \
plural -s

Definition of epigynum

: the female genital opening of an arachnid also : a chitinous plate overlying this opening in a spider

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History and Etymology for epigynum

New Latin epigynum, from epi- + -gynum (from Greek -gynon, neuter of -gynos -gynous)

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