exponentn.[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()2. One who, or that which, stands as an index or representative; as, the leader of a party is the exponent of its principles.()3. one who explains, expounds, or interprets.()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.]()