Abbreviation of author. / Abbreviation of authority.

Abbreviation of authorize.

(automotive) A suspension system that automatically adjusts front and rear ride heights to compensate for changes in axle load.

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.

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

a book in which one collects and displays autographs

(automotive) Technologies that utilize radar, infrared and image processing to allow for a decentralized recording of the environment around the vehicle.

(uncountable) A form of government in which unlimited power is held by a single individual. / (countable) An instance of this government.

A form of government in which the governing body has absolute, or almost absolute, control. Typically this control is maintained by force, and little heed is paid to public opinion or the judicial system.

Acting automatically or involuntarily. / The power of initiating vital processes from within the cell, organ, or organism, independent of external stimulus.