1. working by itself without direct human control
2. done without conscious thought or effort
3. happening as a natural result of something

1. a car with automatic transmission
Usage: informal
2. a gun that fires continuously when the trigger is held

Examples

• The automatic doors opened as we approached the store.
• She gave an automatic response without thinking about it.
• Breathing is an automatic function of the body.
• Promotion to the next grade is automatic if you pass all your classes.
• He drives an automatic instead of a manual transmission car.
• The washing machine has several automatic cycles.
• Her automatic reaction was to apologize.
• The sprinkler system turns on automatically every morning.