Definition of precombustion chamber
: an auxiliary space in which combustible gases are ignited and combustion started ahead of the main combustion chamber of a jet or gas engine
The glow plug is an electrically operated device that protrudes into the precombustion chamber. When energized the glow plug tip heats to a dull red. The swirling, highly compressed air-fuel mixture is heated by the glow plug tip. — Auto Fundamentals
Test Your Vocabulary
Name That Food
-
- Name these cookies!

Test your visual vocabulary with our 10-question challenge!
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Share precombustion chamber
Time Traveler for precombustion chamber
The first known use of precombustion chamber was in 1914
See more words from the same year