exponent
/ɛkˈspəʊnənt/
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.