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natural number

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noun
  1. a positive integer or zero.
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Origin of natural number

First recorded in 1755–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for natural number

natural number

noun
  1. any of the numbers 0,1,2,3,4,… that can be used to count the members of a set; the non-negative integers
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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
natural number in Science

natural number

  1. A positive integer.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.