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Thesaurus: spark plug

electrical device that fits into the cylinder head of an internal-combustion engine and ignites the gas by means of an electric spark

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Definitions

  1. n. electrical device that fits into the cylinder head of an internal-combustion engine and ignites the gas by means of an electric spark
  2. In internal-combustion engines with electric ignition, a plug, screwed into the cylinder head, having through it an insulated wire which is connected with the induction coil or magneto circuit on the outside, and forms, with another terminal on the base of the plug, a spark gap inside the cylinder.
  3. In internal-combustion engines with electric ignition, a plug,screwed into the cylinder head, having through it an insulated wirewhich is connected with the induction coil or magneto circuit on theoutside, and forms, with another terminal on the base of the plug, aspark gap inside the cylinder.