Meaning of AUTOMATIC in English

AUTOMATIC

I. |ȯd.ə|mad.ik, |ȯtə-, -atik, -ēk adjective

also au·to·mat·i·cal -ə̇kəl, -ēk-

Etymology: Greek automatos self-acting + English -ic, -ical — more at automaton

1.

a. : involuntary either wholly or to a major extent so that any activity of the will is largely negligible : of a reflex nature : without volition

the automatic blinking of the eyelids

b. : like or suggestive of an automaton : mechanical

the automatic smile of a tired store clerk

c. : performed without conscious awareness

an unthinking automatic response

2. archaic : able to move and act in total independence of any outside cause : having the power of motion and action entirely within self

3. : having a self-acting or self-regulating mechanism that performs a required act at a predetermined point in an operation

automatic feed of a lathe

automatic record changer

4. : marked by spontaneous or apparently spontaneous action : marked by action that is unpremeditated and that arises as a really or apparently necessary reaction to or consequence of a given set of circumstances

the automatic enthusiasm of the crowd over the returning heroes

automatic branding of the suspect as a traitor

5. of a firearm : marked by the use of either gas pressure or force of recoil and mechanical spring action for ejecting the empty cartridge case after the first shot, loading the next cartridge from the magazine, firing, ejecting the spent case, and repeating the above cycle as long as the pressure on the trigger is maintained and there is ammunition in the magazine or other loading device

automatic weapons

— compare semiautomatic

Synonyms: see spontaneous

II. noun

( -s )

: a machine or apparatus that operates automatically ; especially : an automatic or autoloading firearm

III. noun

: audible herein

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.