air injection

noun

: the injection of atomized fuel oil into the combustion chamber of a diesel engine by means of a jet of compressed air compare solid injection

Word History

First Known Use

1903, in the meaning defined above

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now