[ noo-muh-rey-ter, nyoo- ]
/ ˈnu məˌreɪ tər, ˈnyu- /


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.

Nearby words

  1. numeral,
  2. numeral system,
  3. numerary,
  4. numerate,
  5. numeration,
  6. numerical,
  7. numerical analysis,
  8. numerical aperture,
  9. numerical control,
  10. numerical identity

Origin of numerator

1535–45; < Late Latin numerātor a counter, numberer, equivalent to Latin numerā(re) to number + -tor -tor Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for numerator

British Dictionary definitions for numerator


/ (ˈnjuːməˌreɪtə) /


maths the dividend of a fractionthe numerator of 7/8 is 7 Compare denominator
a person or thing that numbers; enumerator
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for numerator



1540s, from Late Latin numerator "counter, numberer," agent noun from numerat-, past participle stem of numerare "to count, number," from numerus "a number" (see number (n.)).

Online Etymology Dictionary, © 2010 Douglas Harper

Science definitions for numerator


[ nōōmə-rā′tər ]

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 27.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Culture definitions for numerator


In mathematics, the number that appears on the top of a fraction. In the fraction 2/3, the numerator is 2. (Compare denominator.)

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.