- a cardinal number, 50 plus 1.
- a symbol for this number, as 51 or LI.
- a set of this many persons or things.
- amounting to 51 in number.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for fifty-one
From late 1921 and for the next eight years, a “new building went up in New York City every fifty-one minutes, on average.”When New York City Hit Its Stride
July 17, 2014
Even now, at fifty-one, Herschel Walker is one of the most impressive athletes in the world.Are We Killing Our Sports Gene?
August 4, 2013
"Fifty-one and a half for the half-mile," he imparted to Crane, looking at his watch.Thoroughbreds
W. A. Fraser
That is to say, he is such fifty-one weeks out of the fifty-two.A Breath of Prairie and other stories
Franklin reached London July 27, 1757, when he was fifty-one years old.Benjamin Franklin
Paul Elmer More
I have piled up one hundred and fifty-one pages on my comedy.Mark Twain, A Biography, 1835-1910, Complete
Albert Bigelow Paine
The deer had cost us, landed, some fifty-one dollars apiece.A Labrador Doctor
Wilfred Thomason Grenfell