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English definition of “acetabulum”

acetabulum

noun [C]     /ˌæ.sɪˈtæb.jə.ləm/ US  // (plural acetabula) specialized
a cup-shaped structure on either side of the pelvis where the hip bone sits: Prosthetic replacement has been used successfully when the acetabulum has sustained damage.Bone structures
(Definition of acetabulum noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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