Dictionary.com

cloaca

[ kloh-ey-kuh ]
/ kloʊˈeɪ kə /
Save This Word!

noun, plural clo·a·cae [kloh-ey-see]. /kloʊˈeɪ si/.
Zoology.
  1. the common cavity into which the intestinal, urinary, and generative canals open in birds, reptiles, amphibians, many fishes, and certain mammals.
  2. a similar cavity in invertebrates.
a sewer, especially an ancient sewer.
QUIZ
ARE YOU A TRUE BLUE CHAMPION OF THESE "BLUE" SYNONYMS?
We could talk until we're blue in the face about this quiz on words for the color "blue," but we think you should take the quiz and find out if you're a whiz at these colorful terms.
Question 1 of 8
Which of the following words describes “sky blue”?
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of cloaca

1650–60; <Latin clo(u)āca, cluāca sewer, drain; probably akin to Greek klýzein to wash, wash away

OTHER WORDS FROM cloaca

clo·a·cal, adjectivepre·clo·a·cal, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use cloaca in a sentence

British Dictionary definitions for cloaca

cloaca
/ (kləʊˈeɪkə) /

noun plural -cae (-kiː)
a cavity in the pelvic region of most vertebrates, except higher mammals, and certain invertebrates, into which the alimentary canal and the genital and urinary ducts open
a sewer

Derived forms of cloaca

cloacal, adjective

Word Origin for cloaca

C18: from Latin: sewer; related to Greek kluzein to wash out
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for cloaca

cloaca
[ klō-ākə ]

n.
In early embryos, the entodermally lined chamber into which the hindgut and allantois empty.
The common cavity into which the intestinal, genital, and urinary tracts open in vertebrates such as fish, reptiles, birds, and some mammals.
An opening in a diseased bone containing a fragment of dead bone.

Other words from cloaca

clo•acal (-kəl) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for cloaca

cloaca
[ klō-ākə ]

Plural cloacae (klō-āsē′)
The body cavity into which the intestinal, urinary, and genital canals empty in birds, reptiles, amphibians, most fish, and monotremes. The cloaca has an opening for expelling its contents from the body, and in females it serves as the depository for sperm. Also called vent
See vent.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
FEEDBACK