資料來源 : Webster's Revised Unabridged Dictionary (1913)

Automatic \Au`to*mat"ic\, Automatical \Au`to*mat"ic*al\, a. [Cf.
   F. automatique. See {Automaton}.]
   1. Having an inherent power of action or motion.

            Nothing can be said to be automatic.  --Sir H. Davy.

   2. Pertaining to, or produced by, an automaton; of the nature
      of an automaton; self-acting or self-regulating under
      fixed conditions; -- esp. applied to machinery or devices
      in which certain things formerly or usually done by hand
      are done by the machine or device itself; as, the
      automatic feed of a lathe; automatic gas lighting; an
      automatic engine or switch; an automatic mouse.

   3. Not voluntary; not depending on the will; mechanical; as,
      automatic movements or functions.

            Unconscious or automatic reasoning.   --H. Spenser.

   {Automatic arts}, such economic arts or manufacture as are
      carried on by self-acting machinery. --Ure.