Math. any rational or irrational number not having an imaginary part
real number
re·al number 
Three is a real number.
The definition of a real number is any positive or negative number on the number line.
An example of a real number is 1/2, 0, 1, 2, 3, 4, 5, etc.
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real number
Webster's New World College Dictionary, Fifth Edition Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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real number
noun
A number that is either rational or the limit of a sequence of rational numbers.
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.
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"real number." YourDictionary, n.d. Web. 21 January 2019. <https://www.yourdictionary.com/real-number>.
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real number. (n.d.). Retrieved January 21st, 2019, from https://www.yourdictionary.com/real-number
A number that can be written as a terminating or nonterminating decimal; a rational or irrational number. The numbers 2, −12.5, 3/7, and pi (π) are all real numbers.
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"real number." YourDictionary, n.d. Web. 21 January 2019. <https://www.yourdictionary.com/real-number>.
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real number. (n.d.). Retrieved January 21st, 2019, from https://www.yourdictionary.com/real-number
Noun
(plural real numbers)
- (mathematics) The limit of a convergent sequence of rational numbers, whether the limit is a rational number such as 2, -5, or 2/7 or whether the limit is an irrational number such as the square root of two or the length of the circle whose radius is one.
- Every integer is a real number, but not vice versa.
- A real number can be regarded abstractly as an equivalence class of Cauchy sequences of real numbers.WP
- (computing) A floating-point number.
- Even if you pass sqrt an integer, it returns a real number.
Hyponyms
- rational number
- irrational number
English Wiktionary. Available under CC-BY-SA license.
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MLA Style
"real number." YourDictionary, n.d. Web. 21 January 2019. <https://www.yourdictionary.com/real-number>.
APA Style
real number. (n.d.). Retrieved January 21st, 2019, from https://www.yourdictionary.com/real-number
