髄 - marrow, pith, essence

spinal cord

bone marrow; medulla

essence; quintessence; spirit; soul; heart; pith (and marrow)

myelitis

meninges; meninx; membranous coverings

spinocerebellar degeneration; SCD

bacterial meningitis

Nagasunehiko; legendary clan leader who opposed Emperor Jimmu's unification of Japan and was subsequently killed by the deity Nigihayahi

myalgic encephalomyelitis; ME

bone marrow registry; bone marrow bank

multiple myeloma

myelodysplastic syndrome; MDS