1. Adjective.  Capable of operating without external control or intervention.
  2. Adjective.  Done out of habit or without conscious thought.
  3. Adjective.  (context, of a firearm such as a machine gun) Firing continuously as long as the trigger is pressed until ammunition is exhausted.
  4. Adjective.  (computing, of a local variable) Automatically added to and removed from the stack during the course of function calls.
  5. Noun.  A car with automatic transmission.
  6. Noun.  A semi-automatic firearm.

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This entry was last updated on RefTopia from its source on 3/20/2012.