x /ˈɛks/
 字母x


 X
 條形雙X


 X X, the twenty-fourth letter of the English alphabet, has three sounds; a compound nonvocal sound (that of ks), as in wax; a compound vocal sound (that of gz), as in example; and, at the beginning of a word, a simple vocal sound (that of z), as in xanthic.  See Guide to Pronunciation, §§ 217, 270, 271.
 Note: The form and value of X are from the Latin X, which is from the Greek Χ, which in some Greek alphabets had the value of ks, though in the one now in common use it represents an aspirated sound of k.

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 x
      adj : being one more than nine [syn: ten, 10]
      n 1: the cardinal number that is the sum of nine and one; the
           base of the decimal system [syn: ten, 10, tenner,
           decade]
      2: the 24th letter of the Roman alphabet
      3: street names for methylenedioxymethamphetamine [syn: Adam,
          ecstasy, XTC, go, disco biscuit, cristal, {hug
         drug]