xts

/EH1 K S T S/
noun
  1. 1

    Abbreviation of extraterrestrial. [A being originating from outside of the Earth's atmosphere, from space, or from another planet; an alien.]

  2. 2

    (computing) Initialism of extended technology: a version of the IBM PC with a built-in hard drive, released in 1983.

  3. 3

    (uncommon, now archaic) Alternative form of X, abbreviation of Christ. [A placeholder for an unknown, suppressed or hypothetical name.]