Y noun - Definition, pictures, pronunciation and usage notes | Oxford Advanced American Dictionary at OxfordLearnersDictionaries.com

Definition of Y noun from the Oxford Advanced American Dictionary

Y

noun

NAmE//waɪ//

y (pl. Ys, Y's, y's

NAmE//waɪz//

)

1[countable, uncountable] the 25th letter of the English alphabet “Year” begins with (a) Y/“Y.”

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2[uncountable] (mathematics) used to represent a number whose value is not mentioned Can the value of y be predicted from the value of x?

3[uncountable] a person, a number, an influence, etc. that is not known or not named Let's suppose X knows what Y is doing. see Y chromosome

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