fiftieth

1 of 2

adjective

fif·​ti·​eth ˈfiftēə̇th How to pronounce fiftieth (audio)
-tiə̇th
1
: being number 50 in a countable series
the fiftieth day
see Table of Numbers
2
: being one of 50 equal parts into which something is divisible
a fiftieth share

fiftieth

2 of 2

noun

"
plural -s
1
: number 50 in a countable series
2
: the quotient of a unit divided by 50 : one of 50 equal parts of something
one fiftieth of the total

Word History

Etymology

Adjective

Middle English fiftithe, adjective & noun, from Old English fīftigotha (akin to Old Norse fimmtugandi), from fīftig fifty + -otha, -tha, -th

Noun

Middle English fiftithe

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Cite this Entry

“Fiftieth.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fiftieth. Accessed 17 Dec. 2025.

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