Prechamber

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    The area around the spark plug in a cylinder of an internal-combustion engine (or in the cylinder head of a diesel engine) where combustion begins

Etymology

From pre- + chamber.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.