Definition of nucleus pulposus in US English:

nucleus pulposus

noun

Anatomy
  • The gelatinous central portion of an intervertebral disc, composed of hydrated proteoglycans.

Origin

Late 19th century; earliest use found in Michael Foster (1836–1907), physiologist and politician. From scientific Latin nucleus pulposus from classical Latin nucleus + pulpōsus.

Pronunciation

nucleus pulposus

/ˌnjuːklɪəs pʌlˈpəʊsəs/