x

Definitions

General English

  • noun the twenty-fourth letter of the alphabet, between W and Y
  • noun
    (written as X)
    the Roman numeral for ten or tenth
  • symbol fora multiplication sign
  • symbol forshowing size

Economics

  • (written as X)
    In economic models involving international trade, X is usually chosen to represent exports, and M to represent imports, perhaps because E and I have too many other uses.

Electronics

  • symbol for X-coordinate, or abscissa.
  • symbol forreactance
    (written as X)

Information & Library Science

  • noun a symbol used when the name of a person, place or amount is unspecified or to be kept secret

Media Studies

  • noun
    (written as X)
    a censorship classification used in the UK until 1982 for films that could not be shown publicly to anyone under 18 and until 1990 in the United States for films considered unsuitable for under-17s

Slang

  • noun
    (written as X)
    a kiss. A teenagers’ term, from the use of the letter x to symbolize a kiss at the end of a letter. The word is used in phrases such as ‘give us an x’ or, as an affectionate exclamation, ‘x, x, x!’.
  • noun
    (written as X)
    the drug ecstasy
  • symbol forecstasy
    (written as X)

Computing

  • symbol forX-Window System
    (written as X)
  • symbol forextension
    (written as X)
http://www.dictionarycentral.com/definition/x.html