a device designed to fit in each cylinder of a gasoline-powered internal-combustion engine and to produce the electric spark for igniting the mixture of gasoline and air.
Informal. a person who leads, inspires, or animates a group.
another name for sparking plug
A device in the cylinder head of an internal-combustion engine that ignites the fuel mixture by means of an electric spark. Spark plugs consist of two electrodes that are separated by an insulator except at their tips. When high voltage electricity is fed to one electrode, it jumps across the gap from one tip to the other as a spark. The voltage required to generate a spark is directly proportional to the size of the gap; in a car engine it is about 18,000 volts.
noun 1. Jared [jair-id] /ˈdʒɛər ɪd/ (Show IPA), 1789–1866, U.S. historian and editor. 2. a city in W Nevada, E of Reno. noun 1. an ignited or fiery particle such as is thrown off by burning wood or produced by one hard body striking against another. 2. Also called sparkover. Electricity. the light produced by […]
noun, Physics. 1. a spectrum formed from the light produced by an electric spark, characteristic of the gas or vapor through which the spark passes.
noun, Radio. 1. a transmitting set that generates electromagnetic waves by the oscillatory discharge from a capacitor through an inductor and a spark gap. spark transmitter noun 1. an early type of radio transmitter in which power is generated by discharging a capacitor through an inductor in series with a spark gap
adjective, sparkier, sparkiest. 1. emitting or producing sparks. 2. animated; lively: a sparky personality. adjective sparkier, sparkiest 1. lively; vivacious; spirited