X in our alphabet being a needless letter has an added invincibility
to the attacks of the spelling reformers, and like them, will
doubtless last as long as the language. X is the sacred symbol of ten
dollars, and in such words as Xmas, Xn, etc., stands for Christ, not,
as is popular supposed, because it represents a cross, but because the
corresponding letter in the Greek alphabet is the initial of his name
— Xristos. If it represented a cross it would stand for St.
Andrew, who "testified" upon one of that shape. In the algebra of
psychology x stands for Woman’s mind. Words beginning with X are
Grecian and will not be defined in this standard English dictionary.