x

Multiple Entries:
  X    -x    ten  

Concise Oxford English Dictionary © 2008 Oxford University Press:
X1 (also x)

▶noun (pl. Xs or X's)

• 1 the twenty-fourth letter of the alphabet.

• 2 denoting the next after W in a set of items, categories, etc.

• 3 denoting an unknown or unspecified person or thing.

• 4 (usu. x) the first unknown quantity in an algebraic expression.

  ■ denoting the principal or horizontal axis in a system of coordinates.

• 5 a cross-shaped written symbol, used.

  ■ to indicate a position on a map.

  ■ to indicate an incorrect answer.

  ■ to symbolize a kiss.

  ■ to indicate one's vote on a ballot paper.

• 6 the Roman numeral for ten.

Concise Oxford English Dictionary © 2008 Oxford University Press:
X2

▶symbol films classified as suitable for adults only (replaced in the UK in 1983 by 18, and in the US in 1990 by NC–17).

Concise Oxford English Dictionary © 2008 Oxford University Press:
X3

▶abbreviation N. Amer. informal the drug Ecstasy.

Concise Oxford English Dictionary © 2008 Oxford University Press:
-x/z/

▶suffix forming the plural of many nouns ending in -u taken from French: tableaux.

– origin from Fr.

Concise Oxford English Dictionary © 2008 Oxford University Press:
ten/ten/

▶cardinal number equivalent to the product of five and two; one more than nine; 10. (Roman numeral: x or X)

– phrases
ten out of ten denoting an excellent performance.
ten to one very probably.

– derivatives
tenfold adjective & adverb.

– origin OE tēn, tīen, of Gmc origin.