We found 21 dictionaries that define the word natural number:

General (13 matching dictionaries)

1. natural number: Merriam-Webster
2. natural number: American Heritage Dictionary of the English Language
3. natural number: Collins English Dictionary
4. natural number: Vocabulary.com
5. natural number: Wiktionary
6. natural number: The Wordsmyth English Dictionary-Thesaurus
7. natural number: Infoplease Dictionary
8. natural number: Dictionary.com
9. Natural number: Wikipedia, the Free Encyclopedia
10. natural number: Rhymezone
11. natural number: FreeDictionary.org
12. natural number: Mnemonic Dictionary
13. natural number: TheFreeDictionary.com

Business (1 matching dictionary)

14. BusinessDictionary.com (No longer online)

Computing (3 matching dictionaries)

15. natural number: Free On-line Dictionary of Computing
16. natural number: CCI Computer
17. natural number: Encyclopedia

Medicine (1 matching dictionary)

18. online medical dictionary (No longer online)

Science (3 matching dictionaries)

19. Natural Number: Eric Weisstein's World of Mathematics
20. The Computational Beauty of Nature (No longer online)
21. natural number: PlanetMath Encyclopedia

(Note: See natural_numbers as well.)

Definitions from Wiktionary (natural number) ▸ noun:  (mathematics) A positive integer {1, 2, 3, ...}. ▸ noun:  (mathematics) A non-negative integer {0, 1, 2, ...}. Similar: whole number, counting number, nude number, number, numberness, integer, numeric, odd number, ordinal number, even number, more... Opposite: negative number, integer, non-positive number, non-negative number Types: whole number, integer, prime number, composite number, imaginary number, real number, more... Adjectives: abundant, pseudoprime, coprime, relatively prime, characteristic, multiple, incomposite, nth, real, convergent, semiprime ▸ Words similar to natural number ▸ Usage examples for natural number ▸ Idioms related to natural number ▸ Wikipedia articles (New!) ▸ Words that often appear near natural number ▸ Rhymes of natural number ▸ Invented words related to natural number