JMdict: 2761490

マリアナ海溝 【マリアナかいこう】

  1. [n] Mariana Trench (deepest part of the ocean, near the Mariana Islands)
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
海 Sea, Ocean カイ うみ
溝 Gutter, Ditch, Sewer, Drain, 10**32 コウ みぞ