X
noun/eks/
/eks/
(also x)
(plural Xs, X’s, x’s
/ˈeksɪz/
/ˈeksɪz/
)- [countable, uncountable] the 24th letter of the English alphabet
- ‘Xylophone’ begins with (an) X/‘X’.
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- [uncountable] (mathematics) used to represent a number whose value is not mentioned
- The equation is impossible for any value of x greater than 2.
- [uncountable] a person, a number, an influence, etc. that is not known or not named
- Let's suppose X knows what Y is doing.
- [uncountable] a social media service (previously called Twitter™) that allows you to send out short messages about what you are doing or thinking that people can access on the internet or on their mobile phones see also X chromosome, X-rated, X-ray
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