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nǎo

Character evolution

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Simplified · Today

Shuowen

Brain. The character depicts the gray matter within the skull, combining ⺈ (a covering representing the cranium) over 囟 (the fontanelle, the soft spot on an infant's skull where the brain lies closest to the surface), with 月 (flesh) added as a semantic element to indicate bodily tissue. The oracle bone form shows a skull-like enclosure containing the brain's convolutions, capturing the organ's protected position inside the head.

Pinyin

nǎo· HSK 1