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⇱ acetabulum - WordReference.com Dictionary of English

acetabulum

UK:**UK and possibly other pronunciationsUK and possibly other pronunciations/ˌæsɪˈtæbjʊləm/US:USA pronunciation: respellingUSA pronunciation: respelling(as′i tab′yə ləm)

Inflections of 'acetabulum' (n): npl: acetabula

WordReference Random House Unabridged Dictionary of American English © 2026
ac•e•tab•u•lum  (as′i tab′yə ləm),USA pronunciation n., pl. -la (-lə).USA pronunciation 
  1. Anatomythe socket in the hipbone that receives the head of the thighbone. See illus. under pelvis. 
  2. [Zool.]any of the suction appendages of a leech, octopus, etc.
  • Latin: hip socket, cup-shaped part of a plant (Pliny), literally, small cup, origin, originally for vinegar, equivalent. to acēt(um) vinegar + -ā- by analogy with verb, verbal derivs. (compare vocable) + -bulum suffix denoting instrument or vessel
  • 1660–70
ac′e•tab′u•lar, adj. 

Collins Concise English Dictionary © HarperCollins Publishers::
acetabulum /ˌæsɪˈtæbjʊləm/ n ( pl -la /-lə/)
  1. the deep cuplike cavity on the side of the hipbone that receives the head of the thighbone
Etymology: Latin: vinegar cup, hence a cuplike cavity, from acētum vinegar + -abulum, suffix denoting a container
'acetabulum' also found in these entries (note: many are not synonyms or translations):
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