• 直径ちょっけい — diameter
• 径路けいろ — route, path
• 半径はんけい — radius
• 山径さんけい — mountain path

径 combines the radical 彳 (“step” or “go”) with the phonetic sound from 圭. It originally referred to a narrow path where people walk, and now also applies to mathematical terms like diameter.

この径路けいろは 安全あんぜんです。
This route is safe.

円えんの直径ちょっけいを 測はかりましょう。
Let’s measure the diameter of the circle.

🎧 Listen to the Japanese and English readings of this kanji.