JMdict: 2827474

万に一つ 【まんにひとつ】

  1. [exp,adj-no] one in a million (chance, etc.); one in ten thousand; in the unlikely event that
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
Ten Thousand, 10,000 マン, バン よろず
One, One Radical (no.1) イチ, イツ ひと-, ひと.つ