Meaning & readings

sphere, circle, radius, range

On’yomi ケン
Kun’yomi かこ.い

Origin

The character combines the box radical 囗, which represents an enclosed area or boundary, with as a sound hint that guides the pronunciation. The box shape literally shows something enclosed or circled around, and when you repeat this visual concept with another box, it emphasizes the idea of a contained space or spherical region. Over time, this boxing-in sense grew to mean a wider range or sphere of influence, not just a physical enclosure. The sound component helps readers know roughly how to pronounce the character without changing the core meaning about circles and boundaries.

AI-generated (claude-haiku-4-5), not yet reviewed. Formation type (automated guess): Phono-semantic (meaning + sound hint).

12 strokes

Components

  • radical enclosure
  • sound hint
  • radical enclosure

A sound hint component points at the character’s pronunciation, not its meaning — don’t read a meaning into it.

Common words

  • 圏外 けんがい outside (a region, area, etc.); out of range (of a mobile network, radar, etc.)
  • 圏内 けんない inside (a region, area, etc.); within the range (of)
  • 首都圏 しゅとけん Greater Tokyo Metropolitan area
  • 成層圏 せいそうけん stratosphere
  • 北極圏 ほっきょくけん Arctic Circle; the Arctic

Reference

Strokes
12
Kangxi radical
31
Grade
Jōyō (secondary school)
Frequency rank
#1216 (newspapers)
Former JLPT
level 1
Unicode
U+0570F