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WordReference Random House Learner's Dictionary of American English © 2024eight•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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