exponent

noun

• One who expounds, represents or advocates.
• The number by which a value (called the base) is said to be raised to a power in exponentiation: for example, the 3 in 2^3=8.
• The degree to which the root of a radicand is found, for example, the 2 in \sqrt[2]r=b.
• A manifestation of a morphosyntactic property.
• The part of a floating-point number that represents its exponent value.