[ prok-tuh-dee-uhm ]
/ ˌprɒk təˈdi əm /
Save This Word!
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.
DO A DOUBLE TAKE ON THIS QUIZ ON CONTRONYMS
Look both ways before you take this quiz on contronyms, or words that can have opposite meanings.
Question 1 of 7
Choose the sentence that uses "rent" correctly.
Origin of proctodeum
OTHER WORDS FROM proctodeumproc·to·de·al, adjective
Words nearby proctodeum
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
Medical definitions for proctodeum
n. pl. proc•to•de•ums
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 Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.