proctodeum

noun

proc·​to·​de·​um
plural proctodea or proctodaea -ˈdē-ə How to pronounce proctodeum (audio) or proctodeums or proctodaeums
: the posterior ectodermal part of the digestive tract formed in the embryo by invagination of the outer body wall
proctodeal adjective

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Cite this Entry

“Proctodeum.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/proctodeum. Accessed 7 Jul. 2026.

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