glow plug


noun Automotive, Machinery.

a device for each cylinder of a diesel engine with a heating element to heat the incoming fuel and air so that combustion will take place more readily when the engine is cold.

Origin of glow plug

First recorded in 1940–45

OTHER WORDS FROM glow plug

glow-plug, adjective

British Dictionary definitions for glow plug

glow plug

noun

one of usually four plugs fitted to the cylinder block of a diesel engine that warms the engine chamber to facilitate starting in cold weather Also called: heater plug