cotyloid cavity

9.9

A cup-shaped hollow in the hip bone that receives the head of the thigh bone to form the hip joint

noun
/ˈkɒtɪlɔɪd ˈkævɪti/

Specialized

: cavidad cotiloidea

Each cotyloid cavity accommodates the head of the femur.

Examples

Fracture of the cotyloid cavity may disrupt the stability of the hip joint.
The surgeon examined the cotyloid cavity to ensure it could support a hip replacement.
Cartilage within the cotyloid cavity helps cushion the femoral head during movement.
The cotyloid cavity is essential for hip joint stability.
The surgeon examined the cotyloid cavity to ensure it could support a hip replacement.
Fracture of the cotyloid cavity may disrupt the stability of the hip joint.
Cartilage within the cotyloid cavity helps cushion the femoral head during movement.

Synonyms

hip socket

vscotyloid cavity

Specialized

1 4.4

A hollow in the pelvis where the top of the thigh bone fits to connect the leg to the body

is the more technical name used in anatomy rather than general speech

acetabulum

vscotyloid cavity

Specialized

1 9.9

A cup-shaped socket in the hip bone that holds the head of the thigh bone

is the specific anatomical term for the same socket

Surface Forms

cotyloid cavity singular

cotyloid cavities plural

Morphology

cotyloid + cavity

The meaning 'cup-shaped hollow in the hip bone' is directly and compositionally derived from 'cotyloid' (cup-shaped, relating to a joint cavity) + 'cavity' (a hollow). Although the phrase is technical/anatomical, the adjective+noun structure follows regular English composition, so a learner who knows both constituents can infer the MWE meaning.

Etymology

Cotyloid cavity is the medical name for the 'cup' in the hip bone that holds the 'ball' of the thigh bone, the head of the femur. So the picture of a ball sitting in a cup helps explain why it means the hollow in the hip that holds the leg bone and lets the leg move.