Definition of "fifty-fifth" [fifty-fifth]

• The ordinal form of the number fifty-five, describing a person or thing in position number 55 of a sequence. (noun)
• One of fifty-five equal parts of a whole. (noun)

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• "Today, marks the fifty-fifth birthday of another computer legend, Steven Jobs, CEO and founder of Apple Computers."
• "Before returning to Spokane, I asked permission to visit my parents in Saint Louis to celebrate their fifty-fifth wedding anniversary."
• "David Peterson became an Achilles board member and was eventually sworn in as the fifty-fifth governor of New York."