acetabulum

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acetabulum

 [as″ĕ-tab´u-lum] (pl. aceta´bula) (L.)
the cup-shaped cavity on the lateral surface of the hip bone in which the head of the femur articulates.
 Acetabulum, showing the cup-shaped cavity (A), and its articulation with the femur (B). From Dorland's, 2000.

ac·e·tab·u·lum

, pl.

ac·e·tab·u·la

(as-ĕ-tab'yū-lŭm, -lă), [TA]
A cup-shaped depression on the external surface of the hip bone, with which the head of the femur articulates.
Synonym(s): cotyle (2) , cotyloid cavity
[L. a shallow vinegar vessel or cup]

acetabulum

(ăs′ĭ-tăb′yə-ləm)
n. pl. acetabu·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.

ac′e·tab′u·lar (-lər) adj.

Acetabulum

A deep semispherical socket cavity in the lateral surface of the hip, with which the femoral head articulates, located at the convergence of the ilium, ischium, and pubis. The acetabulum is functionally comprised of two columns (anterior and posterior) and two walls (anterior and posterior).

ac·e·tab·u·lum

, pl. acetabula (as-ĕ-tab'yū-lŭm, -lă) [TA]
A cup-shaped depression on the external surface of the hip bone, with which the head of the femur articulates.
Synonym(s): cotyloid cavity.
[L. a shallow vinegar vessel]

acetabulum

(as″ĕ-tab′ū-lŭm) [L., a little saucer for vinegar]
Enlarge picture
ACETABULUM OF RIGHT HIP BONE (FEMALE)
The cavity or depression on the lateral surface of the innominate bone (hip bone). This bone is composed of the three bones ilium, ischium, and pubis, and provides the socket into which the head of the femur fits. acetabular (-lăr), adjective See: illustration

acetabulum

The socket in the side of the bony pelvis into which the spherical head of the thigh bone (FEMUR) fits. The word is derived from the Latin acetum , vinegar and abulum , the diminutive of abrum , a container. The acetabulum was thought to resemble a small vinegar cup.

acetabulum

one of two cup-shaped sockets in the PELVIC GIRDLE articulating with the ball of the FEMUR.

Acetabulum

The large cup-shaped cavity at the junction of pelvis and femur or thigh bone.

ac·e·tab·u·lum

, pl. acetabula (as-ĕ-tab'yū-lŭm, -lă) [TA]
A cup-shaped depression on the external surface of the hip bone, with which the head of the femur articulates.
Synonym(s): cotyloid cavity.
[L. a shallow vinegar vessel]