Acting or operating in a manner essentially independent of external influence or control: an automatic light switch; a budget deficit that triggered automatic spending cuts.
Self-regulating: an automatic washing machine.
Acting or done without volition or conscious control; involuntary: automatic shrinking of the pupils of the eyes in strong light. See Synonyms at spontaneous.
Acting or done as if by machine; mechanical: an automatic reply to a familiar question.
Capable of firing continuously until ammunition is exhausted or the trigger is released: an automatic rifle.
Semiautomatic: an automatic pistol.
An automatic machine or device.
An automatic firearm.
A semiautomatic firearm.
A transmission or a motor vehicle with an automatic gear-shifting mechanism.
Football See audible.
on automatic Functioning by or as if by automatic machine or device.