The kanji character 弧 primarily represents a "curve," "arc," or "arch." It describes a portion of a curved line, typically part of a circle or other curved shape. It can also imply a sense of bending or curving.

・On-yomi (音読み): コ (ko) ・Kun-yomi (訓読み): None, as the meaning is more abstract.

⚫︎ 弧線 Translation: Arc line, curve ⚫︎ 弧度 Translation: Angle (measured in radians, related to the length of an arc) ⚫︎ 抛物線弧 Translation: Parabola (literally "parabolic curve")

The kanji 弧 is a 形声文字 (keisei moji), a phono-semantic compound character. It is composed of two parts: ⚫︎ The radical 弓 (yumi), meaning "bow" or "archery bow," which provides the semantic (meaning) component, hinting at the shape. ⚫︎ The phonetic component 古 (ko), which is used to indicate the pronunciation. The shape of a bow is curved like a 弧.