# Definitions for: Exponent

[n] a mathematical notation indicating the number of times a quantity is multiplied by itself
[n] someone who expounds and interprets or explains
[n] a person who pleads for a cause or propounds an idea

Webster (1913) Definition: Ex*po"nent, n. [L. exponens, -entis, p. pr. of
exponere to put out, set forth, expose. See Expound.]
1. (Alg.) A number, letter, or any quantity written on the
right hand of and above another quantity, and denoting how
many times the latter is repeated as a factor to produce
the power indicated;

Note: thus a^2 denotes the second power, and a^n the xth
power, of a (2 and x being the exponents). A fractional
exponent, or index, is used to denote the root of a
quantity. Thus, a^1/3 denotes the third or cube root
of a.

2. One who, or that which, stands as an index or
representative; as, the leader of a party is the exponent
of its principles.

Exponent of a ratio, the quotient arising when the
antecedent is divided by the consequent; thus, 6 is the
exponent of the ratio of 30 to 5. [R.]