acetabulum

ac·e·tab·u·lum

A0049800 (ăs′ĭ-tăb′yə-ləm)n. pl. ac·e·tab·u·la (-lə) 1. Anatomy The cup-shaped cavity at the base of the hipbone into which the ball-shaped head of the femur fits.2. Zoology A cavity or socket in the body of an insect into which an appendage fits.3. Zoology A cup-shaped structure, such as the sucker of a tapeworm or leech.

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[Latin acētābulum, vinegar cup, from acētum, vinegar; see acetum.]

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ac′e·tab′u·lar (-lər) adj.

acetabulum

(ˌæsɪˈtæbjʊləm) n, pl -la (-lə) 1. (Anatomy) the deep cuplike cavity on the side of the hipbone that receives the head of the thighbone2. (Zoology) a round muscular sucker in flatworms, leeches, and cephalopod molluscs3. (Zoology) the aperture in the thorax of an insect that holds the leg[Latin: vinegar cup, hence a cuplike cavity, from acētum vinegar + -abulum, suffix denoting a container]

ac•e•tab•u•lum

(ˌæs ɪˈtæb yə ləm)

n., pl. -la (-lə) 1. the socket in the hipbone that connects with the head of the femur to form the hip joint. 2. any of the suction appendages of a leech, octopus, etc. 3. the depression on the body into which an insect's leg fits. [1660–70; < Latin: hip socket] ac`e•tab′u•lar, adj.

acetabulum

- The socket of the hip bone, into which the head of the femur fits.See also related terms for socket.

acetabulum

A socket in the hip bone to take the rounded head of the femur.

Thesaurus

Noun

1.

acetabulum - the cup-shaped hollow in the hipbone into which the head of the femur fits to form a ball-and-socket jointcotyloid cavityhipbone, innominate bone - large flaring bone forming one half of the pelvis; made up of the ilium and ischium and pubissocket - a bony hollow into which a structure fits

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