ACETABULA

ACETABULUM

acetabulum, cotyloid cavity

(noun) the cup-shaped hollow in the hipbone into which the head of the femur fits to form a ball-and-socket joint

Source: WordNet® 3.1

Noun

acetabula

plural of acetabulum

Source: Wiktionary

ACETABULUM

Ac`e*tab"u*lum, n. Etym: [L., a little saucer for vinegar, fr. acetum vinegar, fr. acere to be sour.]

1. (Rom. Antiq.)

Definition: A vinegar cup; socket of the hip bone; a measure of about one eighth of a pint, etc.

2. (Anat.) (a) The bony cup which receives the head of the thigh bone. (b) The cavity in which the leg of an insect is inserted at its articulation with the body. (c) A sucker of the sepia or cuttlefish and related animals. (d) The large posterior sucker of the leeches. (e) One of the lobes of the placenta in ruminating animals.

Source: Webster’s Unabridged Dictionary 1913 Edition