noun, plural proc·to·de·a [prok-tuh-dee-uh] /ˌprɒk təˈdi ə/, proc·to·de·ums. Embryology.
- a depression in the ectoderm of the anal region of a young embryo, which develops into part of the anal canal.
Origin of proctodeum
1875–80;Related formsproc·to·de·al, adjective
< New Latin
< Greek prōkt- proct-
+ New Latin -odeum
< Greek hodaîon,
neuter of hodaîos
on or by the way; see -ode2
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- An inward fold on the surface of the embryonic ectoderm that develops into part of the anal passage.anal pit
The American Heritage® Stedman's Medical Dictionary
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