noun

A real number that cannot be expressed as a ratio between two integers.

noun

A real number that cannot be expressed as a ratio between two integers.

THE AMERICAN HERITAGE® DICTIONARY OF THE ENGLISH LANGUAGE, FIFTH EDITION by the Editors of the American Heritage Dictionaries. Copyright © 2016, 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Link to this page

Cite this page

**MLA Style**

"Irrational number." *YourDictionary*. LoveToKnow. www.yourdictionary.com/irrational-number.

**APA Style**

Irrational number. (n.d.). In *YourDictionary*. Retrieved from https://www.yourdictionary.com/irrational-number

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.

Link to this page

Cite this page

**MLA Style**

"Irrational number." *YourDictionary*. LoveToKnow. www.yourdictionary.com/irrational-number.

**APA Style**

Irrational number. (n.d.). In *YourDictionary*. Retrieved from https://www.yourdictionary.com/irrational-number

Noun

(*plural* irrational numbers)

English Wiktionary. Available under CC-BY-SA license.

Link to this page

Cite this page

**MLA Style**

"Irrational number." *YourDictionary*. LoveToKnow. www.yourdictionary.com/irrational-number.

**APA Style**

Irrational number. (n.d.). In *YourDictionary*. Retrieved from https://www.yourdictionary.com/irrational-number

- irrational number
- irrational-numbers
- irrationalism
- irrationalist