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proctodeum

[prok-tuh-dee-uh m] /ˌprɒk təˈdi əm/
noun, plural proctodea
[prok-tuh-dee-uh] /ˌprɒk təˈdi ə/ (Show IPA),
proctodeums. Embryology.
1.
a depression in the ectoderm of the anal region of a young embryo, which develops into part of the anal canal.
Origin of proctodeum
1875-1880
1875-80; < New Latin < Greek prōkt- proct- + New Latin -odeum < Greek hodaîon, neuter of hodaîos on or by the way; see -ode2, -eum
Related forms
proctodeal, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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proctodeal in Medicine

proctodeal proc·to·de·al (prŏk'tə-dē'əl)
adj.
Of or relating to the proctodeum.

proctodeum proc·to·de·um or proc·to·dae·um (prŏk'tə-dē'əm)
n. pl. proc·to·de·ums or proc·to·de·a (-dē-ə) or proc·to·dae·ums or proc·to·dae·a (-dē-ə)
An inward fold on the surface of the embryonic ectoderm that develops into part of the anal passage. Also called anal pit.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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