JMdict: 1546670

要因 【よういん】

  1. [n,adj-no] main cause; primary factor
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
Need, Main Point, Essence, Pivot, Key To ヨウ い.る, かなめ
Cause, Factor, Be Associated With, Depend On, Be Limited To イン よ.る, ちな.む

Words often seen with this one: (experimental feature)

その (11)