Akademik

a transmission that automatically changes the gears according to the speed of the car

: a usually hydraulic or pneumatic mechanism whereby a motor vehicle automatically shifts gear according to actual car speed — called also automatic drive

an automotive transmission requiring either very little or no manual shifting of gears. Also called automatic, automatic drive.

[1945-50]

automatic transmission noun

1. (in a motor vehicle) power transmission by fluid drive, allowing gears to change automatically

2. The transmission of (usu) computer data between two points via a telephone system

Main Entry: ↑automatic

automatic transmission UK US noun [countable/uncountable] [singular automatic transmission plural automatic transmissions]

a system in which the gears of a car change by themselves without any action by the driver

Thesaurus: equipment and systems in cars and other road vehicles_hyponym

automatic transmission or automatic shift,

any automotive transmission that shifts gears automatically and does not require a clutch. Most types of automatic transmission transmit driving power to the wheels by means of a set of turbine blades which forces oil or other fluid against another set of turbine blades or through a torque converter transmitting power in turn to sets of gears operated by liquid. The flow of liquid is controlled by combinations of valves; automatic drive.

ˌautomatic transˈmission [automatic transmission] noun uncountable, countable

a system in a vehicle that changes the gears for the driver automatically