髄 means “marrow, essence”

ずい · zui

Also: pith

On'yomi (Chinese reading)

ズイ

JLPT N1 · Taught in secondary school · 19 strokes

The story

Bone (骨) beside 有, to have, riding a road (辶), as in 随: what each bone holds all the way along. 髄 is marrow: 骨髄 is bone marrow, 脊髄 the spinal cord, and 真髄 is the true essence of an art.

Used in 骨髄 (kotsuzui, bone marrow), 脊髄 (sekizui, spinal cord), and 真髄 (shinzui, essence)

More from Inner Organs

• 腎 kidney
• 膜 membrane
• 腸 intestines
• 肪 fat
• 椎 vertebra
• 剖 dissect
• 泌 secrete
• 脊 spine
• 腺 gland
• 筋 muscle
• 肝 liver
• 胞 cell

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Readings from KANJIDIC2, © EDRDG, CC BY-SA.