Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An inward fold on the surface of the embryonic ectoderm that develops into part of the anal passage.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The back ectodermal part of an alimentary canal.

from The Century Dictionary and Cyclopedia

  • n. See proctodæum.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

New Latin prōctodeum : Greek prōktos, anus + New Latin -odeum (probably from Greek hodaion, neuter of hodaios, on the way, from hodos, way).

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Ancient Greek πρωκτός with ὁδαῖος, of ὁδός.

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