Dictionary.com

proctodeum

[ 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.

QUIZZES

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.

Meet Grammar Coach

Write or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing

Meet Grammar Coach

Improve Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of proctodeum

First recorded in 1875–80; from New Latin, from Greek prōkt- proct- + New Latin -odeum, from Greek hodaîon, neuter of hodaîos “on one's journey or way”; see -ode2, -eum

OTHER WORDS FROM proctodeum

proc·to·de·al, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Medical definitions for proctodeum

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.
FEEDBACK