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Definition of exhaust manifold
exhaust manifold
Plural:exhaust manifolds
exhaust manifold Lexical Profile
CEFR
C1
Grade
9
Tier
3
Usage
Rare
• noun
1
A cast metal component or system of pipes in an internal combustion engine that collects exhaust gases from multiple cylinders and routes them into a single exhaust pipe.
Example
"The mechanic noticed a hairline crack in the exhaust manifold, which was causing the engine to sound unusually loud and smell of fumes."
Word Origin & Etymology
The phrase combines 'exhaust' (from Latin 'exhaustus', meaning 'drawn out') and 'manifold' (from Old English 'manigfeald', meaning 'many folds' or 'numerous', which was adopted in engineering to describe a pipe with multiple inlets or outlets).
Usage Trend
Historical frequency of usage in published text.
180019102020
Data source: Google Books Ngram Viewer
Cite this Entry
Wordmom. (2026). Definition of Exhaust manifold. In Wordmom Dictionary. Retrieved Oct 14, 2026, from https://wordmom.com/dictionary/exhaust manifold