proctodeum

(redirected from proctodaeums)
Also found in: Medical.

proc·to·de·um

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

[New Latin prōctodeum : Greek prōktos, anus + New Latin -odeum (probably from Greek hodaion, neuter of hodaios, on the way, from hodos, way).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

proctodeum

(ˌprɒktəʊˈdiːəm) or

proctodaeum

n, pl -dea (-dɪə)
(Anatomy) the ectodermal, posterior part of the alimentary canal
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014