nine times ten
Origin of ninetyMiddle English nigenty from Old English nigontig: see nine and -ty
the cardinal number between eighty-nine and ninety-one; 90; XC (or LXXXX)
the Gay Nineties
the decade 1890-99 in the U.S.
the numbers or years, as of a century, from ninety through ninety-nine
- The cardinal number equal to 9 × 10.
- nineties a. A decade or the numbers from 90 to 99: My grandparents are in their nineties. During the heat wave, the temperature stayed in the nineties.b. often Nineties The decade from 90 to 99 in a century.
Origin of ninetyMiddle English ninti from Old English nigontig ; see new&nlowring; in Indo-European roots.
- Ordinal: ninetieth