(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.

A set of wires used for long-distance electric power transmission; a power transmission line.

(automotive) Mechanical transmission which shifts gears by the action of the driver's hand on the gearstick or gear lever, rather than automatically; a manual gearbox.

(automotive) A multi-speed vehicle transmission, where gear changes require the driver to manually select the gears by operating a gear stick and clutch (which is usually a foot pedal for cars, or a hand lever for motorcycles).

plural of standard transmission

Used only in the terms cryo-transmission electron micrograph, cryo-transmission electron microscope and cryo-transmission electron microscopy

plural of transmission line

electricity pylon

plural of transmission function

(mathematical analysis) The mathematical function of an electromagnetic wave is a measure of the change undergone by the amplitude of the wave as it propagates in a given direction, which is also called the propagation constant.