(idiomatic) An unknown or hard-to-define influence; a factor with unknown or unforeseeable consequences. / (idiomatic) A special talent, ability or quality or its indefinable cause.

Alternative spelling of X factor

Alternative spelling of X factor

plural of X factor

plural of x factor

Alternative spelling of X factor

plural of x-factor

Misspelling of Xbox.

(typography) The distance between the baseline and midline in a typeface, typically equal to the height of the lower-case letter x.

plural of X-Phile