X
X [X] BrE [eks] NAmE [eks] (also x)noun, symbol
noun (pl. Xs, X's, x'sBrE [ˈeksɪz] ; NAmE [ˈeksɪz] )
1. countable, uncountable the 24th letter of the English alphabet
•‘Xylophone’ begins with (an) X/‘X’.
2. uncountable (mathematics)used to represent a number whose value is not mentioned
•The equation is impossible for any value of x greater than 2.
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 also ↑X chromosome, ↑X-rated, ↑X-ray
symbol
1. the number 10 in ↑Roman numerals
2. used to represent a kiss at the end of a letter, etc.
•Love from Kathy XXX.
3. used to show a vote for sb in an election
•Write X beside the candidate of your choice.
4. used to show that a written answer is wrong
compare ↑tick n. (1)
5. used to show position, for example on a map
•X marks the spot.
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