exponent

noun5

1. •
   The number by which a value (called the base) is said to be raised to a power in exponentiation: for example, the 3 in 2³=8.
2. •
   The part of a floating-point number that represents its exponent value.
3. •
   One who expounds, represents or advocates.

   • Like attracts like," explained Mrs. Mailey, who was quite as capable an exponent as her husband. — 1925
4. •
   A phonological manifestation of a morphosyntactic property; in layman's terms, the expression of one or more grammatical properties by sound.

   • However, there have been no examples presented of gender systems where the plain n triggers one exponent for gender agreement, and the male and female ns together trigger a different exponent. — 2015
5. •
   (no longer used) The degree to which the root of a radicand is found, for example, the 2 in ^(2])√=b.