# acetabulum
## English
### Etymology

Learned borrowing from Latin acētābulum (“vinegar saucer, 1/48 congius”), from acētum (“vinegar”) + -bulum (“-bule: a vessel for”).

### Pronunciation

* (Received Pronunciation) IPA: /ˌæs.ɪˈtæb.jʊl.əm/
* Audio (Southern England):(file)
* (General American) IPA: /ˌæs.əˈtæb.jəl.əm/

### Noun

acetabulum (plural acetabulums or acetabula)
* (anatomy) The bony cup of the hip bone which receives the head of the femur.
    Synonym: cotyloid cavity
    Holonyms: hip joint; hip bone < pelvis
    Comeronyms: (counterpart in the hip joint) femoral head; (counterparts in the hip bone) ilium, ischium, pubis
* (zootomy) The cavity in which the leg of an insect is inserted at its articulation with the body.
    Synonym: cotyle
* (zootomy) A sucker of the sepia or cuttlefish and related animals.
* (zootomy) The large posterior sucker of the leeches.
* (zootomy) One of the lobes of the placenta in ruminating animals.
* A vinegar saucer, especially (historical) in ancient Roman contexts.
* (historical) A Roman unit of liquid measure reckoned as the volume of 2½ Roman ounces of wine and equivalent to about 66 mL although differing slightly over time.
    Coordinate terms: lingula (⅙ acetabulum), cyathus (⅔ acetabulum), quartarius (2 acetabula), hemina (4 acetabula), sextarius (8 acetabula), congius (48 acetabula), urna (192 acetabula), amphora (384 acetabula), culeus (7680 acetabula)

#### Derived terms

* acetabular
* acetabulate
* acetabulo- (and its derivatives)
* aceto- (and its derivatives)

#### Translations
## Latin

* This entry needs quotations to illustrate usage. If you come across any interesting, durably archived quotes then please add them!

### Alternative forms

* acetabulus

### Etymology

From acētum (“vinegar”) +‎ -bulum (“a vessel for”).

### Pronunciation

* (Classical Latin) IPA: /a.keːˈtaː.bu.lum/, [äkeːˈt̪äːbʊɫ̪ʊ̃ˑ]
* (modern Italianate Ecclesiastical) IPA: /a.t͡ʃeˈta.bu.lum/, [ät͡ʃeˈt̪äːbulum]

### Noun

acētābulum n (genitive acētābulī); second declension
* acetabulum, a saucer for vinegar
* saucer, any similarly sized and shaped dish
* (historical) acetabulum, a Roman unit of liquid measure equivalent to about 66 mL
* (anatomy) acetabulum, the hipbone socket
* (zootomy) acetabulum, the suckers or cavities in the arms of polypi
* (botany) acetabulum, the cup of a flower

#### Inflection

Second-declension noun (neuter).

#### Synonyms

* (anatomy and zootomy): cotyla

#### Coordinate terms

* (unit of measure): lingula (⅙ acetabulum), cyathus (⅔ acetabulum), quartarius (2 acetabula), hemina (4 acetabula), sextarius (8 acetabula), congius (48 acetabula) urna (192 acetabula), amphora (384 acetabula), culeus (7680 acetabula)

#### Derived terms

* acetabulosus

#### Descendants

* → Catalan: acetàbul
* → English: acetabulum
* → Esperanto: acetabulo
* → French: acétabule, acétabulum
* Italian: acetabolo
* → Portuguese: acetábulo
* → Romanian: acetabul
* → Russian: ацетабул (acetabul)
* → Spanish: acetábulo

### References

* “acetabulum”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
* "acetabulum", in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
* acetabulum in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.
* “acetabulum”, in Harry Thurston Peck, editor (1898), Harper's Dictionary of Classical Antiquities, New York: Harper & Brothers
* “acetabulum”, in William Smith et al., editor (1890), A Dictionary of Greek and Roman Antiquities, London: William Wayte. G. E. Marindin