The ordinal form of the number sixty-nine, describing a person or thing in position number 69 of a sequence.(noun)
One of sixty-nine equal parts of a whole.(noun)
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Use "sixty-ninth" in a sentence
"To find my new home on a map, my mother would have to place her finger on the North Pole and trace a line through Svalbard and the frigid sea, down to the sixty-ninth parallel to a place called Kautokeino."
"Huntington discovered an unexpectedly large cluster of famous people born in June who died a couple of months shy of their sixty-ninth birthdays, and another implausibly large group born in February who died a month shy of their seventieth birthdays."
"The only U.S. man to meet the Olympic qualifying time that year finished sixty-ninth."