JMdict: 1203780

外周 【がいしゅう】

  1. [n] outer circumference; perimeter
  2. [n] outskirts; periphery
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
外 Outside ガイ, ゲ そと, ほか, はず.す, はず.れる, と-
周 Circumference, Circuit, Lap シュウ まわ.り