proctodaeum

noun
proc·​to·​dae·​um | \ ˌpräk-tə-ˈdē-əm How to pronounce proctodaeum (audio) \
plural proctodaea\ ˌpräk-​tə-​ˈdē-​ə How to pronounce proctodaea (audio) \ or proctodaeums

Definition of proctodaeum

: the embryonic posterior ectodermal part of the digestive tract

First Known Use of proctodaeum

1876, in the meaning defined above

History and Etymology for proctodaeum

New Latin, from Greek prōktos anus + hodos way

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The first known use of proctodaeum was in 1876

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