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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.
n, pl -cae (-kiː)
1. (Zoology) 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
2. a sewer
[C18: from Latin: sewer; related to Greek kluzein to wash out]
cloˈacal, cloˈacaline, ˌcloaˈcinal adj
n., pl. -cae (-sē).
a. the common cavity into which the intestinal, urinary, and generative canals open in birds, reptiles, amphibians, many fishes, and certain mammals.
b. a similar cavity in invertebrates.
2. a sewer, esp. an ancient sewer.
[1650–60; < Latin clo(u)āca, cluāca sewer, drain]
The body cavity into which the intestinal, urinary, and genital canals empty in birds, reptiles, amphibians, most fish, and the primitive mammals known as monotremes. The cloaca has an opening for expelling its contents from the body.
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|Noun||1.||cloaca - (zoology) the cavity (in birds, reptiles, amphibians, most fish, and monotremes but not mammals) at the end of the digestive tract into which the intestinal, genital, and urinary tracts open|
|2.||cloaca - a waste pipe that carries away sewage or surface water|