Meaning of 'automatic'

adjective

operating with minimal human intervention

adjective

resembling the unthinking functioning of a machine

Example: "an automatic `thank you'"

Synonyms: automatonlike machinelike robotlike robotic

adjective

without volition or conscious control

Example: "the automatic shrinking of the pupils of the eye in strong light"

Synonyms: reflexive reflex

noun

a pistol that will keep firing until the ammunition is gone or the trigger is released

Synonyms: automatic pistol

noun

light machine gun

Synonyms: automatic rifle machine rifle