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natural number

American

noun

a positive integer or zero.

natural number British

noun

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

"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 Scientific

A positive integer.

Etymology

Origin of natural number

First recorded in 1755–65

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

A notable difference from Almaty was Rodgers' ability to call on natural number nine in Iheanacho.

From BBC • Sep. 24, 2025

Kai Havertz, who is playing the centre-forward role despite not being a natural number nine, is their top scorer in the league on seven.

From BBC • Jan. 13, 2025

The result is that every natural number is either happy or sad.

From Scientific American • Oct. 24, 2023

A fragile tail, featuring at least three natural number 11s, also cranked up the responsibility on the overnight pairing of Root and Foakes.

From Seattle Times • Jun. 5, 2022

We have heard it said that five per cent. is the natural interest of money, that twelve is the natural number of a jury, that forty shillings is the natural qualification of a county voter.

From Critical and Historical Essays — Volume 2 by Macaulay, Thomas Babington Macaulay, Baron

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023