Wiktionary
forty-fifth
n. (context fractional English) One of forty-five equal parts of a whole. num. (context ordinal English) The ordinal form of the number forty-five, describing a person or thing in position number 45 of a sequence.
WordNet
forty-fifth
adj. the ordinal number of forty-five in counting order [syn: 45th]
Usage examples of "forty-fifth".
Anne Iwanowna, who died in the forty-fifth year of her age, after having bequeathed her crown to Iwan, or John, the infant son of her niece, the princess Anne of Mecklenburgh, who had been married to Anthony Ulrick, duke of Brunswick Lunenberg-Bevern.
I'd been to a coffee shop on Sixth Avenue and Forty-fifth Street, a piano bar in the Village, a pair of bars in the West Forties.