Meaning

• 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.