- a fraction having the numerator greater than the denominator.
Origin of improper fraction
First recorded in 1535–45
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a fraction in which the numerator has a greater absolute value or degree than the denominator, as 7/6 or (x ² + 3)/(x + 1)
- A fraction in which the numerator is greater than or equal to the denominator, such as 32. Compare proper fraction.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.