Nine
Pronunciation
- RP enPR: nīn, IPA: /naɪn/, naɪ̯n
- Rhymes: -aɪn
Origin
From Middle English nine, from Old English niÄ¡on, from Proto-Germanic *newun, from Proto-Indo-European *hâ‚néwnÌ¥.
Numeral
numeral
Related terms
Full definition of nine
Noun
nine
(plural nines)- The digit or figure 9.
- (card games) A playing card with nine pips.
- (weaponry) A nine-millimeter semi-automatic pistol.
- (computing, engineering, usually in plural) A statistical unit of proportion (of reliability, purity, etc.).They guaranteed that our Web site would have 99.99% uptime, or four nines.