Quality of being automatic.

plural of semi-automatic

A form of writing claimed not to come from the conscious thoughts of the writer, sometimes performed in a trance.

(weaponry) A rifle that loads itself either from a belt or magazine; a machine gun. (Compare fully automatic rifles vs semi-automatic rifles.)

plural of automatic rifle

(weaponry) A semi-automatic firearm, especially such a pistol. / (automotive) A semi-automatic transmission.

Partially automatic. / Of a firearm that automatically ejects a shell and loads the next one, but requires the trigger to be squeezed for each shot; autoloading.

(automotive) A vehicle transmission which shifts gears automatically in response to vehicle speed and/or load, and does not require any driver input to manually change gears under normal driving conditions; an automatic gearbox.

plural of automatic writing

(mathematics, computing) Exact differentiation of functions represented in program code by inspecting the code (as opposed to mere evaluation) and repeated application of the chain rule.