rational number


Definition of rational number

: a number that can be expressed as an integer or the quotient of an integer divided by a nonzero integer

Examples of rational number in a Sentence

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The rank is a measurement that tells you something about how many of the solutions to that equation are rational numbers as opposed to irrational numbers. Quanta Magazine, "Without a Proof, Mathematicians Wonder How Much Evidence Is Enough," 31 Oct. 2018 Over the past decade Kim has described a very new way of looking for patterns in the seemingly patternless world of rational numbers. Quanta Magazine, "Secret Link Uncovered Between Pure Math and Physics," 1 Dec. 2017 The rational numbers, remember, consist of all the numbers that can be written as a fraction. Quanta Magazine, "Mathematicians Crack the Cursed Curve," 7 Dec. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'rational number.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of rational number

1873, in the meaning defined above

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Last Updated

27 Aug 2019

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The first known use of rational number was in 1873

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More Definitions for rational number

rational number


Kids Definition of rational number

: a number that can be expressed as a whole number or the quotient of two whole numbers

More from Merriam-Webster on rational number

Britannica.com: Encyclopedia article about rational number

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to be made up of

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