next after the forty-fourth; being the ordinal number for 45.
being one of 45 equal parts.
a forty-fifth part, especially of one (1/45).
the forty-fifth member of a series.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use forty-fifth in a sentence
After about the forty-fifth year it becomes gradually less; after seventy-five years it is about one-half the amount given.A Manual of Clinical Diagnosis | James Campbell Todd
In temperate climates this menopause occurs about the forty-fifth year, but it may come earlier or considerably later.Essays In Pastoral Medicine | Austin Malley
He died at ten minutes past eight on Monday evening the 3rd of December, in the forty-fifth year of his age.The Works of Robert Louis Stevenson - Swanston Edition Vol. 25 (of 25) | Robert Louis Stevenson
Again, if he be perfectly formed on the forty-fifth day, he will move on the ninetieth and be born in the ninth month.The Works of Aristotle the Famous Philosopher | Anonymous
Joan asked, pausing definitely on the corner at forty-fifth Street.Joan Thursday | Louis Joseph Vance