The ordinal form of the number thirty-five, describing a person or thing in position number 35 of a sequence.(noun)
One of thirty-five equal parts of a whole.(noun)
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Use "thirty-fifth" in a sentence
"But as we passed our first anniversary and with my thirty-fifth birthday looming in November, I felt a strong sense of urgency to move to the next level in my own professional life."
"Thirty-five books to commemorate her thirty-fifth birthday in December, and my name was the one of over 1300 to be drawn."
"We're drunk at noon, thanks to a great little concoction called a mimosa that, though not strong enough to suit a thirty-fifth birthday, is served with brunch at Edward's on King Avenue."