Nu"mer*a"tor (?), n. [L.
numerator: cf. F. numérateur.]
1. One who numbers.
2. (Math.) The term in a fraction
which indicates the number of fractional units that are
taken.
&fist; In a vulgar fraction the numerator is written above a line;
thus, in the fraction &frac59; (five ninths) 5 is the numerator; in a
decimal fraction it is the number which follows the decimal point.
See Fraction.