An Encylopedia Britannica Company

X

X /ˈɛks/
X
/ˈɛks/
Britannica Dictionary definition of X
used in the past as a special mark to indicate that no one under the age of 17 in the U.S. or 18 in the U.K. was allowed to see a particular movie in a movie theater compare g, nc-17, pg, pg-13, r; see also x-rated