Definition of numerator in US English: numerator
noun The number above the line in a common fraction showing how many of the parts indicated by the denominator are taken, for example, 2 in 2/3.
Example sentences
‘If you calculate the divergence for different species of plants, you find that both the numerator and the denominator are usually Fibonacci numbers.’ ‘To convert a fraction to a percentage, divide the numerator by the denominator.’ ‘In other words, a number is rational if we can write it as a fraction where the numerator and denominator are both integers.’ ‘From this we observe that the rows of numerators and denominators of the terms in the Stern-Brocot tree are computed independently of each other.’ ‘We stop when the fraction has a numerator or a denominator of 1.’ Pronunciation numerator /ˈn(j)uməˌreɪdər/ /ˈn(y)o͞oməˌrādər/