ON
Meanings
arcbow (archery)
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How to remember

The kanji's left component 弓 (bow) clearly suggests the curved shape of an ARC.

Vocabulary

円弧えんこ
circular arc
弧線こせん
curved line, arc
弧を描くこをえがく
to draw an arc
虹の弧にじのこ
arc of a rainbow
月弧げっこ
crescent (moon)

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