jet engine

noun

: an engine that produces motion as a result of the rearward discharge of a jet of fluid

specifically : an airplane engine that uses atmospheric oxygen to burn fuel and produces a rearward discharge of heated air and exhaust gases see airplane illustration

Examples of jet engine in a Sentence

Recent Examples on the Web

Tackling supply bottlenecks According to Orbital, the same manufacturing platform can produce components for solid rocket motors, hypersonic vehicles, missile defense interceptors, space systems, jet engines, and nuclear microreactors. — Neetika Walter, Interesting Engineering, 26 June 2026

The baseplate and three bridges of the RMUL4 are machined from grade 5 titanium—an aerospace-grade alloy used in jet engines and a defining staple in Richard Mille’s design language. — Richard Mille Contributor, Forbes.com, 25 June 2026

Tune out jet engines and loud talkers on your next flight with these Soundcore noise-canceling headphones. — Melony Forcier, Travel + Leisure, 23 June 2026

They’re used in a wide range of products, including smartphones, semiconductors, electric vehicles and jet engines. — ABC News, 20 June 2026

Word History

First Known Use

1933, in the meaning defined above

Kids Definition

jet engine

noun

: an engine that produces motion as a result of the rearward discharge of a jet of fluid

especially : an aircraft engine that uses atmospheric oxygen to burn fuel and produces a rearward discharge of heated air and exhaust gases