ninetieth
Nine before the century
Ninetieth is the ordinal form of ninety—the position following eighty-ninth in a sequence: her ninetieth birthday, the ninetieth anniversary of the founding.
As a noun, a ninetieth is one of ninety equal parts: a ninetieth of the total.
Ordinal for eighty
- seventiethRanking at position seventy
- sixtiethOrdinal after fifty-ninth
- fiftiethAfter forty-ninth
- hundredthOrdinal for one hundred
eighty-ninth · fortieth · thirtieth · twentieth · tenth · first · second · third
Annual date of origin
- celebrationFestive event marking occasion
- commemorationAct of honoring memory
- jubileeSpecial anniversary observance
- nonagenarianPerson aged ninety-plus
longevity · centenarian · milestone · tribute · remembrance · legacy · decades · veteran
Ordered position assignment
- thresholdPoint of beginning
- benchmarkStandard for comparison
- standingPosition, physical or social
- scoreNumerical standing in competition
distribution · achievement · elite · cutoff · assessment · performance · statistical · evaluation
Fraction's bottom number
- numeratorNumber being divided
- proportionComparative relation of parts
- ratioComparative numerical relation
- percentageProportion out of hundred
division · segment · slice · share · allocation · subdivision · quotient · part
eightieth
Ordinal for eighty
- seventiethRanking at position seventy
- sixtiethOrdinal after fifty-ninth
- fiftiethAfter forty-ninth
hundredth · eighty-ninth · fortieth · thirtieth · twentieth · tenth · first · second · third · sequential
birthday
Annual date of origin
- celebrationFestive event marking occasion
- commemorationAct of honoring memory
- jubileeSpecial anniversary observance
nonagenarian · longevity · centenarian · milestone · tribute · remembrance · legacy · decades · veteran · retrospective
ranking
Ordered position assignment
score · distribution · achievement · elite · cutoff · assessment · performance · statistical · evaluation · placement
denominator
Fraction's bottom number
- numeratorNumber being divided
- proportionComparative relation of parts
- ratioComparative numerical relation
percentage · division · segment · slice · share · allocation · subdivision · quotient · part · section
- ordinal numberstenth, eleventh, twelfth, thirteenth, fourteenth
- ordinalsfirst, second, third, fourth, fifth