a fraction having the numerator less, or lower in degree, than the denominator.
Words nearby proper fraction
Origin of proper fraction
First recorded in 1665–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for proper fraction
a fraction in which the numerator has a lower absolute value than the denominator, as 1/2 or x /(3 + x ²)
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
Science definitions for proper fraction
[ prŏp′ər ]
A fraction in which the numerator is less than the denominator, such as 12. Compare improper fraction.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.