非ひ数すう

noun

not a number; NaN

Computing term for a numeric data type value representing an undefined or unrepresentable result, such as 0/0. Often seen in programming contexts.

See also: ＮａＮ (ナン)

• 0を0で割わると、結けっ果かは非ひ数すう（NaN）になる。

  Dividing zero by zero results in NaN (not a number).