troph·​o·​ne·​ma | \ˌträfəˈnēmə\
plural trophonemata\ -​ˈnēmətə -​ˈnem-​ \

Definition of trophonema 

: one of the glandular filaments that develop from the inner uterine surface in viviparous elasmobranchs and secrete a nutritive fluid for the embryo

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First Known Use of trophonema

1891, in the meaning defined above

History and Etymology for trophonema

New Latin, from troph- + -nema

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The first known use of trophonema was in 1891

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