real number

noun

Definition of real number

: a number that has no imaginary part the set of all real numbers comprises the rationals and the irrationals

First Known Use of real number

circa 1909, in the meaning defined above

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The first known use of real number was circa 1909

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Cite this Entry

“Real number.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/real%20number. Accessed 11 Aug. 2020.

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