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Search Result for "acetabulum": 
Wordnet 3.0

NOUN (1)

1. the cup-shaped hollow in the hipbone into which the head of the femur fits to form a ball-and-socket joint;
[syn: acetabulum, cotyloid cavity]


The Collaborative International Dictionary of English v.0.48:

Acetabulum \Ac`e*tab"u*lum\, n. [L., a little saucer for vinegar, fr. acetum vinegar, fr. acere to be sour.] [1913 Webster] 1. (Rom. Antiq.) A vinegar cup; socket of the hip bone; a measure of about one eighth of a pint, etc. [1913 Webster] 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. [1913 Webster]
WordNet (r) 3.0 (2006):

acetabulum n 1: the cup-shaped hollow in the hipbone into which the head of the femur fits to form a ball-and-socket joint [syn: acetabulum, cotyloid cavity]