D defs.my
Entry 6 senses · 2 variants Webster, 1913

Automatic

/ôtˌ-əm-ăt'-ĭk/ · Au·to·mat·ic · IPA /ˌɔː.təˈmæt.ɪk/
01 a. Having an inherent power of action or motion.
  1. 1.
    Having an inherent power of action or motion.
    “Nothing can be said to be automatic.” — Sir H. Davy.
  2. 2.
    Pertaining to, or produced by, an automaton; of the nature of an automaton; self-acting or self-regulating under fixed conditions; operating with minimal human intervention; -- 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; an automatic transmission. The opposite of manual.
  3. 3.
    Not voluntary; not depending on the will; mechanical; controlled by the autonomic nervous system; without conscious control; as, automatic movements or functions. The opposite of voluntary.(Physiol.)
    “Unconscious or automatic reasoning.” — H. Spenser.
  4. 4.
    like the unthinking functioning of a machine.
Phrases & compounds
Automatic arts — such economic arts or manufacture as are carried on by self-acting machinery.
02 n. light machine gun.
  1. 1.
    light machine gun.
  2. 2.
    a pistol that will keep firing until the ammunition is gone or the trigger is released; as, a .45 automatic.
Syn. automatic rifle, machine rifleSyn. -- automatic pistol.