English Dictionary

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English Dictionary

acetabulum  (ˌæsɪˈtæbjʊləm



(plural) -la   (-lə) 
  1. the deep cuplike cavity on the side of the hipbone that receives the head of the thighbone
  2. a round muscular sucker in flatworms, leeches, and cephalopod molluscs
  3. the aperture in the thorax of an insect that holds the leg

Word Origin

Latin: vinegar cup, hence a cuplike cavity, from acētum vinegar + -abulum, suffix denoting a container


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