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irrational number

noun, Mathematics
1.
a number that cannot be exactly expressed as a ratio of two integers.
Origin
1545-1555
1545-55
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for irrational-number

irrational number

noun
1.
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
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irrational-number in Science
irrational number
  (ĭ-rāsh'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 © 2002. Published by Houghton Mifflin. All rights reserved.
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irrational-number in Culture

irrational number definition


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

Note: The square roots of most whole numbers are irrational numbers.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Value for irrational

10
12
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