みちすう

未 知 数

Common word

  1. noun (common) (futsuumeishi)

    (an) unknown, unknown number, variable

    • Ｘ記号は数学ではたいてい未知数を表す。
      The symbol "x" usually stands for an unknown quantity in mathematics.

  2. noun (common) (futsuumeishi), nouns which may take the genitive case particle 'no'

    unknown quantity, not yet known