The kanji 径 primarily conveys the idea of a path, route, or diameter. It suggests something that is a way through or a measure across, often in a circular or linear context. It also relates to a measure of distance or a specific dimension.

・On-yomi (音読み): ⚫︎ けい (kei) ・Kun-yomi (訓読み): ⚫︎ こみち (komichi) - small path, lane

⚫︎ 直径 Translation: Diameter ⚫︎ 半径 Translation: Radius ⚫︎ 山道 Translation: Mountain path

The kanji 径 is a phono-semantic compound (形声文字, keisei moji). The right side is 工 (kou), which means "work" or "craftsmanship". The left side is 彳 (gyou-nyou), which is a "walking radical". The original meaning of this kanji character is related to paths, because the original meaning is path-like, and then it got expanded into meanings of diameter and measurement.