Cloaca definition

klō-ākə
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.
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The posterior part of the intestinal tract in various invertebrates.
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A sewer or latrine.
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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.
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The posterior part of the intestinal tract in various invertebrates.
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The cavity into which both the intestinal and the genitourinary tracts empty in reptiles, birds, amphibians, and many fishes.
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In some invertebrates, a similar cavity serving as an excretory, respiratory, and reproductive duct.
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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.
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A sewer or cesspool.
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Other Word Forms

Noun

Singular:
cloaca
Plural:
cloacae

Origin of cloaca

  • Latin cloāca sewer, canal

    From American Heritage Dictionary of the English Language, 5th Edition