Arithmetic. 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. Compare denominator( def 1 ).
a person or thing that numbers.
Origin: 1535–45; < Late Latinnumerātor a counter, numberer, equivalent to Latinnumerā(re) to number + -tor-tor
numerator (n'mə-rā'tər) Pronunciation Key
A number written above or to the left of the line in a common fraction to indicate the number of parts of the whole. For example, 2 is the numerator in the fraction 2/7 .