next after the forty-ninth; being the ordinal number for 50.
being one of 50 equal parts.
a fiftieth part, especially of one (1/50).
the fiftieth member of a series.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use fiftieth in a sentence
As I was lifting myself up for the fiftieth time, he said, “Now get in the water and make a sugar cookie.”
He even bought a convertible sports car for his fiftieth birthday.
After passing his fiftieth year an individual should abstain from venesection.Old-Time Makers of Medicine | James J. Walsh
I should like to see you without it for the fiftieth part of a second.The Tragic Muse | Henry James
A pocket-book, with which he presented his father on his fiftieth birthday, brought out his unqualified praise.There and Back | George MacDonald
Prince Paskiewitch completed the fiftieth year of his service in the Russian army.
Mark Twain's fiftieth birthday was one of the pleasantly observed events of that year.Mark Twain, A Biography, 1835-1910, Complete | Albert Bigelow Paine
British Dictionary definitions for fiftieth
being the ordinal number of fifty in order, position, time, etc. Often written: 50th
(as noun): the fiftieth in the series
one of 50 equal or approximately equal parts of something
(as modifier): a fiftieth part
the fraction equal to one divided by 50 (1/50)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012