spark plug
Noun
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Noun
spark plug (plural spark plugs)
- The part of an internal combustion engine which forms a high-voltage electric spark which ignites the fuel-air mixture to begin the power stroke.
- (figuratively) Someone who is a driving force in new endeavours.
- Synonyms: straw that stirs the drink, catalyst, instigator, mover and shaker, stimulus
- (military) A rod (for cylindrical secondaries) or sphere (for spherical secondaries) of fissile material at the center of the secondary of a multistage thermonuclear weapon, which undergoes nuclear fission when compressed to supercriticality by the imploding secondary, helping to raise the secondary to the pressures and temperatures necessary to ignite nuclear fusion in the secondary's fusion fuel.
- French: bougie d'allumage, bougie
- German: Zündkerze
- Italian: candela di accensione
- Portuguese: vela de ignição
- Russian: свеча́ зажига́ния
- Spanish: bujía
This text is extracted from the Wiktionary and it is available under the CC BY-SA 3.0 license | Terms and conditions | Privacy policy 0.004