nucleus pulposus

noun
nucleus pul·​po·​sus | \ -ˌpəl-ˈpō-səs How to pronounce nucleus pulposus (audio) \
plural nuclei pulposi\ -​ˌsī How to pronounce nuclei pulposi (audio) \

Medical Definition of nucleus pulposus

: an elastic pulpy mass lying in the center of each intervertebral fibrocartilage and regarded as a remnant of the notochord

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