cloaca

名词 n.
中文释义
英 /kləʊˈeɪ.kə/    美 /kloʊˈeɪ.kə/

英文释义

名词 n.
  1. A sewer. figuratively,sometimes
    — The Thames, polluted with the filthy effusions of the cloacae.
  2. The opening in reptiles, amphibians and birds, as well as elasmobranchians, lobe-finned fishes, and monotreme mammals, which serves as the common outlet for the urogenital ducts and rectum.
    — In birds the rectum, at the termination of its canal, forms an oval or elongated pouch […] and then expands into a cavity, which has been named cloaca.
  3. An outhouse or lavatory.
    — To every house […] a cloaca.
  4. A duct through which gangrenous material escapes a body.
    — Across this shell [sc. of bone] small holes are eaten, by which the matter escapes, and which are called cloacae (Weidmann).
  5. Structure in the embryo during the development of the reproductive and urinary systems.

词形变化

cloacas plural cloacae plural

词汇关系

上位词
external genitalia
衍生词
cloacal cloacinal cloacitis persistent cloaca

词源

Borrowed from Latin cloāca (“sewer”), related to cluō (“cleanse; purge”), but the derivation is uncertain.
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