We found 29 dictionaries that define the word ninety:

General (26 matching dictionaries)

1. ninety: Longman Dictionary of Contemporary English
2. ninety: Merriam-Webster
3. ninety: Oxford Learner's Dictionaries
4. ninety: American Heritage Dictionary of the English Language
5. ninety: Collins English Dictionary
6. ninety: Vocabulary.com
7. Ninety, ninety: Wordnik
8. ninety: Cambridge Advanced Learner's Dictionary
9. ninety: Wiktionary
10. ninety: Webster's New World College Dictionary, 4th Ed.
11. ninety: The Wordsmyth English Dictionary-Thesaurus
12. ninety: Infoplease Dictionary
13. Ninety, ninety: Dictionary.com
14. ninety: Online Etymology Dictionary
15. ninety: Cambridge Essential American English Dictionary
16. Ninety (album), Ninety: Wikipedia, the Free Encyclopedia
17. Ninety: Online Plain Text English Dictionary
18. ninety: Webster's Revised Unabridged, 1913 Edition
19. ninety: Rhymezone
20. ninety: AllWords.com Multi-Lingual Dictionary
21. ninety: Webster's 1828 Dictionary
22. ninety: FreeDictionary.org
23. ninety: Mnemonic Dictionary
24. ninety: TheFreeDictionary.com

Computing (1 matching dictionary)

25. ninety: Encyclopedia

Miscellaneous (1 matching dictionary)

26. ninety: Idioms

Slang (1 matching dictionary)

27. ninety, ninety: Green’s Dictionary of Slang

(Note: See 90 as well.)

Definitions from WordNet ( ) ▸ noun:  the cardinal number that is the product of ten and nine ▸ adjective:  being ten more than eighty Opposite: eighteen, young, beginning, start, early Phrases: ninety degrees, ninety seconds, ninety six, ninety nine, ninety five, more... Colors:     gray,     silver,     charcoal,     pewter,     smoke, more... ▸ Word origin ▸ Words similar to ninety ▸ Usage examples for ninety ▸ Idioms related to ninety ▸ Wikipedia articles (New!) ▸ Popular adjectives describing ninety ▸ Popular nouns described by ninety ▸ Words that often appear near ninety ▸ Rhymes of ninety ▸ Invented words related to ninety