automatic transmission

automatic transmission

n (Automotive Engineering) a transmission system in a motor vehicle, usually incorporating a fluid clutch, in which the gears change automatically

automat′ic transmis′sion

n. an automotive transmission requiring either very little or no manual shifting of gears. [1945–50]

Thesaurus

Noun

1.

automatic transmission - a transmission that automatically changes the gears according to the speed of the carautomatic drivetransmission system, transmission - the gears that transmit power from an automobile engine via the driveshaft to the live axle