和英／英和辞典 - Japanese⇔English Dictionary

1. 1. [adj-na, adj-no, n] {math} irreducible

Kanji in this word

• 既
  previously, already, long ago

  On: キ (ki)

  Kun: すで.に (sude.ni)

  10 strokes · Grade 8 · JLPT N1
• 約
  promise, approximately, shrink

  On: ヤク (yaku)

  Kun: つづ.まる (tsudu.maru)、 つづ.める (tsudu.meru)、 つづま.やか (tsuduma.yaka)

  9 strokes · Grade 4 · JLPT N2