say it: aw-tuh-MAT-ik
automatic is an adjective and noun meaning "operating with minimal human intervention; independent of external control". It carries 5 recorded senses.
operating with minimal human intervention; independent of external control
“automatic transmission”
“a budget deficit that caused automatic spending cuts”
resembling the unthinking functioning of a machine
“an automatic `thank you'”
“machinelike efficiency”
without volition or conscious control
“the automatic shrinking of the pupils of the eye in strong light”
“a reflex knee jerk”
“sneezing is reflexive”
physiology
light machine gun
a pistol that will keep firing until the ammunition is gone or the trigger is released
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for automatic come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.