Jōyō kanji, Taught in junior high
JLPT level: N1
1652 of 2500 most used kanji in newspapers
Stroke count: 19
Meaning: marrow, pith, essence
Kunyomi:
Onyomi: ズイ
Composition: 骨
Radical: 骨
Meaning: bone
髄 (ズイ) medulla, marrow, pith
髄膜炎 (ズイマクエン) meningitis
骨髄 (コツズイ) bone marrow, medulla, true spirit, one's mind
脊髄 (セキズイ) spinal cord