rational number
nounUK /ˈræʃənəl ˈnʌmbə/
US /ˈræʃənəl ˈnʌmbər/
A rational number is a number that can be written as a fraction with whole numbers on top and bottom.
One half and three quarters are rational numbers.
RELATED WORDS
OTHER MEANINGS
2. A number expressible as the quotient of two integers, where the denominator is not zero.
Every integer is a rational number because it can be written over one.
3. A number whose decimal form either ends or repeats in a pattern.
0.75 is a rational number because its decimal ends.
4. In school math, any number that can be shown as a simple fraction.
The teacher asked the class to list five rational numbers between zero and one.