fiftieth

American  

[fif-tee-ith] / ˈfɪf ti ɪθ /

adjective

1. next after the forty-ninth; being the ordinal number for 50.

2. being one of 50 equal parts.

---

noun

fiftieths plural

1. a fiftieth part, especially of one (1/50).

2. the fiftieth member of a series.

fiftieth British  

/ ˈfɪftɪɪθ /

adjective

1. 1. being the ordinal number of fifty in order, position, time, etc. Often written: 50th

   2. ( as noun )

      the fiftieth in the series

---

noun

1. 1. one of 50 equal or approximately equal parts of something

   2. ( as modifier )

      a fiftieth part

2. the fraction equal to one divided by 50 ( 1/ 50 )

Other Word Forms

Noun Inflected Forms

• fiftieths
  plural

Etymology

Origin of fiftieth

before 1000; Middle English fiftithe, Old English fīftigotha. See fifty, -th ²

Example Sentences

See Examples For:

fiftieth fiftieths

A US congressional panel has released a redacted copy of an alleged "birthday book" given to Jeffrey Epstein in 2003 celebrating his fiftieth birthday.

From BBC ● Sep. 9, 2025

It weighs less than one fiftieth of a gram; significantly less than current state-of-the-art pacemakers, which weigh at least five grams.

From Science Daily ● Feb. 21, 2024

My parents will be having their fiftieth wedding anniversary this year.

From Slate ● Feb. 3, 2023

"As my term as High Commissioner draws to a close, this Council's milestone fiftieth session will be the last which I brief," she said, without giving a reason.

From Reuters ● Jun. 13, 2022

And all the while Starnes and Mary stayed in the pictures together, from their wedding to their fiftieth anniversary.

From "An Abundance of Katherines" by John Green

One reason to feel glad to be nearly done with this round of fiftieths is that we will no longer be subjected, constantly, to generalizations about the baby-boom generation.

From The New Yorker ● Aug. 18, 2019

Forty-nine fiftieths, at least, of the whole of New Mexico, are a barren waste, a desert plain of mountain, with no wood, no timber.

From The Great Speeches and Orations of Daniel Webster With an Essay on Daniel Webster as a Master of English Style by Webster, Daniel

Forty-nine fiftieths of the inhabitants of the kingdom, forty-nine fiftieths of the property of the kingdom, almost all the political, legal, and military ability and knowledge to be found in the kingdom, were Protestant.

From The History of England, from the Accession of James II — Volume 2 by Macaulay, Thomas Babington Macaulay, Baron

The thermometers are graduated from 0° to 12° C. or from 8° to 20° C. and each degree is divided into fiftieths.

From Respiration Calorimeters for Studying the Respiratory Exchange and Energy Transformations of Man by Benedict, Francis Gano

What ruined the agriculturists, who used to feed the remaining forty-nine fiftieths?

From Blackwood's Edinburgh Magazine, Volume 59, No. 368, June 1846 by Various