plural x's or xs
ˈek-səz
often capitalized, often attributive
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 Table of Numbers
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
1
: to mark with an x
2
: to cancel or obliterate with a series of x's
—usually used with out
x-ed out the mistake
1
cross
2
ex
3
experimental
4
extra
1
2
by
—used in nonmathematical constructions
He drove a 4x4 vehicle.
of a motion picture
: of such a nature that admission is denied to persons under a specified age (such as 17)
—used before the adoption of NC-17
Love words? Need even more definitions?
Merriam-Webster unabridged
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