nucleus pulposus
noun
nucleus pul·po·sus
-ˌpəl-ˈpō-səs 
plural nuclei pulposi
-ˌsī
: an elastic pulpy mass lying in the center of each intervertebral fibrocartilage and regarded as a remnant of the notochord
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“Nucleus pulposus.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/nucleus%20pulposus. Accessed 14 Nov. 2024.
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