eightieth

[ ey-tee-ith ]

/ ˈeɪ ti ɪθ /

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adjective

next after the seventy-ninth; being the ordinal number for 80.

being one of 80 equal parts.

noun

an eightieth part, especially of one (1/80).

the eightieth member of a series.

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Origin of eightieth

1350–1400; Middle English eightetithe,Old English (hund)eahtatigotha eightieth. See eighty, -th²

Words nearby eightieth

Eighth Amendment, Eighth Commandment, eighthly, eighth note, eighth rest, eightieth, eightpenny, eights, eightsome reel, eight-spot, eight-track tape

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use eightieth in a sentence

He lived to be ninety years old, and produced the most beautiful of his tragedies in his eightieth year, the "Oedipus at Colonus."
Beacon Lights of History, Volume I|John Lord
Mlle. Clairon died on January 31, 1803, six days after completing her eightieth year.
Queens of the French Stage|H. Noel Williams
So active did he continue to the end of his days, that on his eightieth birthday he climbed an oak in my company.
Wanderings in South America|Charles Waterton
Since that date he has lived retired in Hutchinson, where he still makes his home, being now in the eightieth year of his age.
Lyman's History of old Walla Walla County, Vol. 2 (of 2)|William Denison Lyman

None of us are, you know, when we pass the eightieth milestone!
Cursed|George Allan England

British Dictionary definitions for eightieth

eightieth

/ (ˈeɪtɪɪθ) /

adjective

(usually prenominal)

being the ordinal number of eighty in numbering or counting order, position, time, etc: often written 80th
(as noun)the eightieth in succession

noun

one of 80 approximately equal parts of something
(as modifier)an eightieth part

the fraction equal to one divided by 80 (1/80)

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