automatic adjective

1. starting or functioning by itself: started, operated, or regulated by a process or mechanism without human intervention

2. done by prior arrangement: beginning when certain conditions are fulfilled, without the need for a decision or action

3. PHYSIOLOGY independent of somebody’s will: done without thought or intention, especially as the result of a reflex

4. done without thought: performed without conscious thought as the result of habit or custom

 

noun (plural automatics)

1. machine operating without human intervention: a machine, for example a washing machine, that controls its own operating process

2. AUTOMOTIVE motor vehicle not requiring manual gear: a motor vehicle that has a built-in mechanism ( automatic transmission ) for changing gears without requiring the driver to do it

3. ARMS gun that fires continuously: a gun that continues to fire for as long as the trigger is pressed, automatically ejecting used cartridges and reloading

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