: a rotary engine actuated by the reaction or impulse or both of a current of fluid (such as water, steam, or air) subject to pressure and usually made with a series of curved vanes on a central rotating spindle

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The oldest and simplest form of turbine is the waterwheel, which is made to rotate by water falling across its blades and into buckets suspended from them. Hero of Alexandria invented the first steam-driven turbine in the 1st century A.D., but a commercially practical steam turbine wasn't developed until 1884; steam turbines are now the main elements of electric power stations. Jet engines are gas turbines. A turbojet engine uses a turbine to compress the incoming air that feeds the engine before being ejected to push the plane forward; a turboprop engine uses its exhaust to drive a turbine that spins a propeller. A wind turbine generates electricity by being turned by the wind; the largest now have vanes with a turning diameter of over 400 feet.

Examples of turbine in a Sentence

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Previously, the Department of Interior has cited concerns about the impact turbine blades can have on military radar in its efforts to halt offshore wind development. — John Moritz, Hartford Courant, 14 Oct. 2026 Built from fiberglass that is expensive to break down, these components can end up in landfills even though much of the rest of a turbine is recyclable. — Atharva Gosavi, Interesting Engineering, 13 Oct. 2026 Along some stretches of highway unused turbine blades line the roadsides like giant, fiberglass elephant tusks. — Simone McCarthy, CNN Money, 13 Oct. 2026 Germany is taking wind power to new heights with a turbine almost as tall as Berlin’s iconic television tower at Alexanderplatz. — New Atlas, 9 Oct. 2026 See All Example Sentences for turbine

Word History

Etymology

French, from Latin turbin-, turbo top, whirlwind, whirl, from turba confusion — more at turbid

First Known Use

1842, in the meaning defined above

Time Traveler
The first known use of turbine was in 1842

Cite this Entry

“Turbine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/turbine. Accessed 16 Oct. 2026.

Kids Definition

turbine

noun
: an engine whose central driving shaft is fitted with a series of blades spun around by the pressure of a fluid (as water, steam, or air)
Etymology

from French turbine "turbine," from Latin turbin-, turbo "top (for spinning), whirlwind"

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