字Study Chinese Characters
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wú not have; without

Component (a building block) — not the same thing as a radical or a sound component. · 4strokes

Characters that use it as a component

抚芜

Characters filed under it as a radical

Kangxi radical no.71 · 4strokes — The 214 Kangxi radicals

Filed under it in a dictionary. That is a lookup convention — it does not mean it is the only part the character is built from.

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