Definition of "sixty-sixth" [sixty-sixth]

• The ordinal form of the number sixty-six, describing a person or thing in position number 66 of a sequence. (noun)
• One of sixty-six equal parts of a whole. (noun)

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• "Later that day, Dulles called Eisenhower to congratulate him on his sixty-sixth birthday."
• "With his sixty-sixth birthday in mid-December, Herman Cain's resume reads like a number of successful and aspiring Americans who have moved up the ladder in business."
• "So here I am, two hours into my sixty-sixth year ...."