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Cloacae: meaning, definitions and examples

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cloacae

 

[ kloʊˈeɪki ]

Noun
Context #1 | Noun

anatomy term

Cloacae are openings or cavities found in certain animals that serve multiple functions, including excretion and reproduction. In many species, the cloaca is a common chamber for the expulsion of urine, feces, and reproductive fluids. This anatomical feature is particularly notable in birds, amphibians, and reptiles, where it plays a crucial role in their physiology. The cloaca allows for the efficient elimination of waste and, in some species, serves as the reproductive opening. Understanding cloacae is essential for studying the biology and ecology of these animals.

Synonyms

common opening, orifice, vent, vulva

Examples of usage

  • Birds excrete waste through their cloaca.
  • Some reptiles use their cloaca for mating.
  • The cloaca is an important feature in amphibians.
  • Cloacae allow for the release of both urinary and fecal matter.

Etymology

The word 'cloaca' comes from the Latin word 'cloaca,' meaning 'sewer' or 'drain.' In ancient Rome, a cloaca was an essential part of sanitary engineering, referring to a system of underground drains that carried away waste from the city. The term evolved in the field of biology to describe a similar multi-functional opening in certain animals that serves to expel waste and reproductive materials. As biology progressed, the concept of the cloaca was used to study various species, particularly in comparative anatomy and evolutionary biology. The study of cloacae has provided insights into the reproductive adaptations and waste management mechanisms across various taxa, solidifying its importance in both anatomical study and veterinary practices.

Word Frequency Rank

Ranking #36,766, this word is encountered relatively rarely in everyday English. It might appear in literary works or specialized texts but isn't essential for general communication.