Meaning of X in English

X

n.

Pronunciation: ' eks

Function: noun

Inflected Form: plural x's or xs \ ' ek-s ə z \

Usage: often cap

often attrib

before 12th century

1 a : the 24th letter of the English alphabet b : a graphic representation of this letter c : a speech counterpart of orthographic x

2 : TEN ― see NUMBER table

3 : a graphic device for reproducing the letter x

4 : one designated x especially as the 24th in order or class, or the first in an order or class that includes x, y, and sometimes z

5 : an unknown quantity

6 : something shaped like or marked with the letter X

Merriam Webster Collegiate English Dictionary.      Merriam Webster - Энциклопедический словарь английского языка.