/nooh"meuh ray'teuhr, nyooh"-/ , n.
1. Arith. the term of a fraction, usually above the line, that indicates the number of equal parts that are to be added together; the dividend placed over a divisor: The numerator of the fraction 2 / 3 is 2. Cf. denominator (def. 1).
2. a person or thing that numbers.
[ 1535-45; numerator a counter, numberer, equiv. to L numera ( re ) to NUMBER + -tor -TOR ]