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English definition of “odd”

odd

adjective  /ɑd/ us  

odd adjective (STRANGE)

[-er/-est only] strange or unexpected: an odd person That’s odd – I thought I left my glasses on the table but they’re not here.

odd adjective (SEPARATED)

[not gradable] (of something that should be in a pair or set) separated from its pair or set: He’s got a whole drawer full of odd socks.

odd adjective (NUMBER)

[not gradable] (of numbers) not able to be divided exactly by 2: Some examples of odd numbers are 1, 3, 5, and 7.

odd

adverb [not gradable]  /ɑd/ us  

odd adverb [not gradable] (APPROXIMATELY)

used after a number, esp. a number that can be divided by 10, to show that the exact number is not known: He holds another 50-odd acres of land in reserve, providing plenty of room for expansion.
(Definition of odd from the Cambridge Academic Content Dictionary © Cambridge University Press)
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