### Exponent

**EXPO'NENT**, *noun* [Latin exponens; expono, to expose or set forth; ex and pono, to place.]

**1.** In algebra, the number or figure which, placed above a root at the right hand, denotes how often that root is repeated, or how many multiplications are necessary to produce the power. Thus a[2] denotes the second power of the root a, or aa: a[4] denotes the fourth power. The figure is the *exponent* or index of the power.

**2.** The *exponent* of the ratio or proportion between two numbers or quantities, is the quotient arising when the antecedent is divided by the consequent. Thus six is the *exponent* of the ratio of thirty to five.