a cardinal number, ten times five.
a symbol for this number, as 50 or L.
a set of this many persons or things.
fifties, the numbers, years, degrees, or the like, from 50 through 59, as in referring to numbered streets, indicating the years of a lifetime or of a century, or degrees of temperature: She lives in the East Fifties. He's in his late fifties. It's going to be in the fifties again today.
Informal. a fifty-dollar bill: He had a fifty and two tens in his wallet.
amounting to 50 in number.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use fifty in a sentence
Throughout the fifties, in city after city, fluoridation became the subject of fierce debate.
I struck up a conversation with a man in his fifties or sixties who had a Brooklyn accent.
PANKISI GORGE, Georgia—The mother of martyrs, a woman in her fifties, is delicately beautiful and visibly in pain.
An earthquake finally destroyed the town in the Fifties, but it really started to die when the Christian population was deported.
“Oh, they are with us,” said the leader of the group, a man in his fifties, dressed in camouflage, wearing a peaked military cap.
She had heard in books of girls writing poetry, romance, history—gaining fifties and hundreds.The Daisy Chain | Charlotte Yonge
During the fifties the celebrated singing master Piccioli was living in Petersburg.The Life & Letters of Peter Ilich Tchaikovsky | Modeste Tchaikovsky
His misconception of Piedmontese policy throughout the fifties is a yet stronger illustration of distorted vision.The Life of Mazzini | Bolton King
He was a man in his fifties, heavy-set, with a stern, swarthy face.The Status Civilization | Robert Sheckley
Tell us how you managed the Irish Brigade in France in the fifties.My New Curate | P.A. Sheehan
British Dictionary definitions for fifty
the cardinal number that is the product of ten and five
a numeral, 50, L, etc, representing this number
something represented by, representing, or consisting of 50 units
amounting to fifty: fifty people
(as pronoun): fifty should be sufficient
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