1.
within range; within the sphere; inside the area
Inside a defined boundary or zone, whether physical (signal range, commuting distance) or abstract (sphere of influence). Often used with a preceding noun to specify what kind of range.
ここは通勤圏内だ。
This area is within commuting distance.
スマホの電波が圏内に戻った。
The phone signal came back into range.
首都圏内の人口は年々増加している。
The population within the capital region is increasing year by year.
USAGE:
圏内 is typically used with a preceding noun that specifies the type of range or zone: 通勤圏内 (commuting range), 首都圏内 (within the capital region), etc. It is also commonly used for mobile phone signal coverage.
COMMON COLLOCATIONS:
- 通勤圏内 (within commuting distance)
- 首都圏内 (within the greater capital area)
- 圏内に入る (to come within range)
- 射程圏内 (within firing range)
- 勢力圏内 (within a sphere of influence)
CONTRAST:
圏外 is the antonym, meaning outside the range or out of coverage. On mobile phones, 圏外 is the indicator shown when there is no signal.