1. [Adjective]: operating with minimal human intervention; independent of external control; "automatic transmission"; "a budget deficit that caused automatic spending cuts"

2. [Noun]: light machine gun

3. [Noun]: a pistol that will keep firing until the ammunition is gone or the trigger is released

4. like the unthinking functioning of a machine; "an automatic `thank you''"; "machinelike efficiency"

5. without volition or conscious control; "the automatic shrinking of the pupils of the eye in strong light"; "a reflex knee jerk"; "sneezing is reflexive"

1. autoloading(a)

2. self-loading

3. semiautomatic

4. automated

5. machine-controlled

6. machine-driven

7. self-acting

8. self-activating

9. self-moving

10. self-regulating

11. self-locking

12. self-winding

13. semiautomatic

14. mechanical

15. involuntary

1. manual