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


Etymology

Noun

acetabulum (plural acetabula or acetabulums)

(anatomy) The bony cup of the pelvis which receives the head of the femur.

(zoology) The cavity in which the leg of an insect is inserted at its articulation with the body.

(zoology) A sucker of the sepia or cuttlefish and related animals.

(zoology) The large posterior sucker of the leeches.

(zoology) One of the lobes of the placenta in ruminating animals.

(Roman Antiquities) A vinegar cup.

(Roman Antiquities) The socket of the hipbone.

(Roman Antiquities) A measure of about one eighth of a pint.

Synonyms

• (bony cup of the pelvis): cotyloid cavity

Source: Wiktionary


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



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Word of the Day

30 January 2025

HYPERICISM

(noun) a severe dermatitis of herbivorous domestic animals attributable to photosensitivity from eating Saint John’s wort


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Coffee Trivia

In the 18th century, the Swedish government made coffee and its paraphernalia (including cups and dishes) illegal for its supposed ties to rebellious sentiment.

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