ACETABULUM

Pronunciation (US): (GB):

Irregular inflected form: acetabula

Meaning:

The cup-shaped hollow in the hipbone into which the head of the femur fits to form a ball-and-socket joint

Synonyms:

acetabulum; cotyloid cavity

Classified under:

Nouns denoting body parts

Hypernyms ("acetabulum" is a kind of...):

socket (a bony hollow into which a structure fits)

Holonyms ("acetabulum" is a part of...):

hipbone; innominate bone (large flaring bone forming one half of the pelvis; made up of the ilium and ischium and pubis)

Derivation:

acetabular (of the cup-shaped socket that receives the head of the thigh bone)