noun
Mathematical term for the exponent in expressions like a^n. Used in algebra and analysis.
aのn乗のnを冪指数という。
The n in a to the power of n is called the exponent.
冪乗の計算は指数法則に従う。
Exponentiation follows the laws of exponents.
The kanji 冪 originally meant 'to cover' or 'cloth cover', and its use for 'exponent' is a specialized mathematical borrowing, likely from Chinese mathematical terminology.