**Nu"mer*a"tor** (?), n. [L. *numerator*: cf. F. *num'erateur*.]

**1.**

One who numbers.

**2.** Math.

The term in a fraction which indicates the number of fractional units that are taken.

⇒ In a vulgar fraction the numerator is written above a line; thus, in the fraction 5/9 (five ninths) 5 is the numerator; in a decimal fraction it is the number which follows the decimal point. See Fraction.

© Webster 1913.