cloacal(redirected from cloacal membrane)
Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
n. pl. clo·a·cae (-sē′)
1. A sewer or latrine.
a. The common cavity that serves as the opening for the intestinal, genital, and urinary tracts in many vertebrates, including amphibians, reptiles, birds, monotremes, and some fishes.
b. The posterior part of the intestinal tract in various invertebrates.
[Latin cloāca, sewer, canal.]
clo·a′cal (-kəl) adj.
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.