noun

1. One who expounds, represents or advocates.

2. 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.

3. The degree to which the root of a radicand is found, for example, the 2 in \sqrt[2]r=b.

Synonyms: degree, power, power