The ordinal form of the number forty-nine, describing a person or thing in position number 49 of a sequence.(noun)
One of forty-nine equal parts of a whole.(noun)
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Use "forty-ninth" in a sentence
"And when both men and women were combined it fell to forty-ninth."
"He did wonder why his new boss waited to show this final ruse in the Irish bar across forty-ninth street instead of in the gleaming new offices on the eleventh floor of the headquarters."
"In his habitual home on the forty-ninth parallel, sunlight was a pale grey-eyed thing."