Consider the fraction 3/7.

In Mathematics, "7" in the expression is called "denominator" of the fraction. But in the case of "3", some people call it "nominator", and some call it "numerator". Which one is true and more commonly used?

  • 2
    A nominator is one who nominates. If we were going to cut a pizza, and someone shouted, "Cut it into twelfths!", then the shouter would be the nominator, for nominating 12 slices.
    – J.R.
    May 23 '12 at 18:00
  • 1
    OED says this meaning of "nominator" is "rare".
    – GEdgar
    May 23 '12 at 18:30

I was taught that "numerator" was the correct form. I have never heard "nominator" until now. Google Ngrams seems to agree.

enter image description here

Not the answer you're looking for? Browse other questions tagged or ask your own question.