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WordReference Random House Unabridged Dictionary of American English © 2024eight•i•eth (ā′tē ith),USA pronunciation adj. - next after the seventy-ninth;
being the ordinal number for 80. - being one of 80 equal parts.
n. - an eightieth part, esp. of one (1⁄80).
- the eightieth member of a series.
- Middle English eightetithe, Old English (hund)eahtatigotha eightieth. See eighty, -th2 1350–1400
Collins Concise English Dictionary © HarperCollins Publishers:: ˈeightieth /ˈeɪtɪɪθ/ adj - (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
n - one of 80 approximately equal parts of something
- (as modifier): an eightieth part
- the fraction equal to one divided by 80 ( 1⁄80)
eight•y /ˈeɪti/USA pronunciation n. [countable], pl. eight•ies. - a number, ten times eight.
- a symbol for this number, as 80 or LXXX.
- eighties, [plural] the numbers from 80 through 89, as in referring to the years of a lifetime or of a century or to degrees of temperature: [one's + ~]He's in his eighties (= He is between 80 and 89 years of age).[the + ~]The temperature is in the eighties.
eight•i•eth, adj. WordReference Random House Unabridged Dictionary of American English © 2024eight•y (ā′tē),USA pronunciation n., pl. eight•ies, adj. n. - a cardinal number, ten times eight.
- a symbol for this number, as 80 or LXXX.
- a set of this many persons or things.
- eighties, the numbers, years, degrees, or the like, from 80 through 89, as in referring to numbered streets, indicating the years of a lifetime or of a century, or degrees of temperature.
adj. - amounting to 80 in number.
- Middle English eighteti, Old English eahtatig. See eight, -ty1 bef. 850
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