- 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
Check pronunciation: Y