fiftieth

Preposition: of

• second: Why does the spectrum tick every fiftieth of a second?

Converse of object

• tick: Why does the spectrum tick every fiftieth of a second?

Modifies a noun

• anniversary: Next year will be the fiftieth anniversary of the 1951 Festival of Britain.
• birthday: By the time Bridge was past his fiftieth birthday, a more serious problem arose.
• celebration: In 1955, as part of the fiftieth birthday celebrations, a special steam train took the whole school on a visit to London.
• year: They declared his uncle Claudius, who was in his fiftieth year, emperor.
• day: Thus on the thirteenth day 22 words were translated; on the fiftieth day 45 words.
• time: Finally, even in my wooden brain, about the fiftieth time I saw it, it started to penetrate.