acetabulum

noun
ac·​e·​tab·​u·​lum | \-ˈta-byə-ləm \
plural acetabulums or acetabula\ -​lə \

Definition of acetabulum 

1 : a ventral sucker of a trematode

2 : the cup-shaped socket in the hip bone

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Other Words from acetabulum

acetabular \ -​lər \ adjective

Examples of acetabulum in a Sentence

Recent Examples on the Web

The head of the femur becomes abnormally shaped and no longer fits seamlessly in the acetabulum, or socket, putting the hip at risk of future injury. Sandra G. Boodman, chicagotribune.com, "She thought she'd pulled hip muscles, but 6 doctors couldn't diagnose her pain," 16 May 2017 The head of the femur becomes abnormally shaped and no longer fits seamlessly in the acetabulum, or socket, putting the hip at risk of future injury. Sandra G. Boodman, chicagotribune.com, "She thought she'd pulled hip muscles, but 6 doctors couldn't diagnose her pain," 16 May 2017 The head of the femur becomes abnormally shaped and no longer fits seamlessly in the acetabulum, or socket, putting the hip at risk of future injury. Sandra G. Boodman, chicagotribune.com, "She thought she'd pulled hip muscles, but 6 doctors couldn't diagnose her pain," 16 May 2017 The head of the femur becomes abnormally shaped and no longer fits seamlessly in the acetabulum, or socket, putting the hip at risk of future injury. Sandra G. Boodman, chicagotribune.com, "She thought she'd pulled hip muscles, but 6 doctors couldn't diagnose her pain," 16 May 2017 The head of the femur becomes abnormally shaped and no longer fits seamlessly in the acetabulum, or socket, putting the hip at risk of future injury. Sandra G. Boodman, chicagotribune.com, "She thought she'd pulled hip muscles, but 6 doctors couldn't diagnose her pain," 16 May 2017 The head of the femur becomes abnormally shaped and no longer fits seamlessly in the acetabulum, or socket, putting the hip at risk of future injury. Sandra G. Boodman, Washington Post, "She thought she’d pulled hip muscles, but six doctors couldn’t diagnose her pain," 15 May 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'acetabulum.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of acetabulum

1661, in the meaning defined at sense 1

History and Etymology for acetabulum

borrowed from Latin acētābulum "small cup (originally used for vinegar), sucker of a polyp, socket of the hip bone," from acētum "vinegar" + -a- (by analogy with derivatives formed from verbs, as vocābulum vocable) + -bulum, instrument suffix (going back to Indo-European *-dhlom) — more at acetic acid

Note: Late Indo-European apparently possessed several deverbal instrumental suffixes of similar shape (*-dhlo-, *-tlo-, *-dhro-, *-tro-, perhaps all originally < *-tro-, zero-grade of the agent suffix -tor), which are unevenly attested and partially conflated in the daughter languages. Note in Latin rōstrum "beak, rostrum"; crībrum "sieve" (see cribriform); obstāculum obstacle; stabulum stable entry 1.

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The first known use of acetabulum was in 1661

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More Definitions for acetabulum

acetabulum

noun
ac·​e·​tab·​u·​lum | \-ˈtab-yə-ləm \
plural acetabulums or acetabula\ -​lə \

Medical Definition of acetabulum 

1 : the cup-shaped socket in the hip bone

2 : a sucker of an invertebrate (as a trematode or leech)

Other Words from acetabulum

acetabular \ -​lər \ adjective

More from Merriam-Webster on acetabulum

Britannica.com: Encyclopedia article about acetabulum

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