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square number

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noun
  1. a number that is the square of another integer, as 1 of 1, 4 of 2, 9 of 3, etc.
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Origin of square number

First recorded in 1550–60
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for square number

square number

noun
  1. an integer, such as 1, 4, 9, or 16, that is the square of an integer
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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