X x x n u d e
Many of the words that start with ⟨x⟩ are of Greek origin, or standardized trademarks (Xerox) or acronyms (XC). XMIT for transmit, XFER for transfer), "cross-" (e.g.X-ing for crossing, XREF for cross-reference), "Christ-" as shorthand for the labarum (e.g. has a zero-tolerance policy against illegal pornography.
X-rays, Generation X, The X-Files, and The Man from Planet X; see also Malcolm X).
In the C programming language, "x" preceded by zero (as in 0x or 0X) is used to denote hexadecimal literal values.
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It may also be used as a typographic approximation for the multiplication sign.
In mathematical typesetting, x meaning an algebraic variable is normally in italic type (), partly to avoid confusion with the multiplication symbol.On some identification documents, the letter X represents a non-binary gender, where F means female and M means male.