# irrational number

a number that cannot be exactly expressed as a ratio of two integers.

## Origin of irrational number

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## Words Nearby irrational number

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

## How to use irrational number in a sentence

This is because there are way more irrational numbers than rational numbers.

The Coach Who Led the U.S. Math Team Back to the Top | Max G. Levy | February 16, 2021 | Quanta MagazineSo what’s kind of funny is that you didn’t provide me a number — an

*irrational number*— that is actually the most common kind of number there is.The Coach Who Led the U.S. Math Team Back to the Top | Max G. Levy | February 16, 2021 | Quanta MagazineIn that theory an

*irrational number*was the ratio of two incommensurable geometric magnitudes.The widened idea is that even when a or x is an

*irrational number*we may speak of a or x unit lengths by measure.

## British Dictionary definitions for irrational number

any real number that cannot be expressed as the ratio of two integers, such as π

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

## Scientific definitions for irrational number

[ ĭ-răsh′ə-nəl ]

A number that cannot be expressed as a ratio between two integers and is not an imaginary number. If written in decimal notation, an irrational number would have an infinite number of digits to the right of the decimal point, without repetition. Pi and the square root of 2 (√2) are irrational numbers.

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

## Cultural definitions for irrational number

A number that cannot be expressed as the ratio of two whole numbers.

## Notes for irrational number

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.

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