JMdict: 1552230

流域 【りゅういき】

  1. [n] drainage basin; catchment basin; river basin; watershed; valley
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
流 Current, A Sink, Flow, Forfeit リュウ, ル なが.れる, なが.れ, なが.す, -なが.す
域 Range, Region, Limits, Stage, Level イキ