髄 marrow, pith, essence 19 strokes jōyō, taught in secondary school old JLPT 1 #1652 in newspapers Readings Onズイ In Chinese 髓 Words written with it 骨髄 こつずい bone marrow 真髄 しんずい essence 髄膜炎 ずいまくえん meningitis 脊髄 せきずい spinal cord