acetabular
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ac·e·tab·u·lum
(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.
[Latin acētābulum, vinegar cup, from acētum, vinegar; see acetum.]
ac′e·tab′u·lar (-lər) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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Adj. | 1. | acetabular - of the cup-shaped socket that receives the head of the thigh bone concave - curving inward |
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