: 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

Recent Examples on the Web
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These systems allow turbine components to face temperatures that would weaken an unprotected alloy. Atharva Gosavi, Interesting Engineering, 29 Aug. 2026 Supply chains for transformers and turbines are backlogged for years. Joshua MacEy, Hartford Courant, 28 Aug. 2026 An oscillating water column uses the rise and fall of waves to push and pull air through a turbine to generate electricity. ABC News, 26 Aug. 2026 The company has entered into an agreement with the Mississippi Department of Environmental Quality that includes removing the 69 temporary turbines at the plant and replacing them with 41 permanent turbines over the course of a year. Lauren Fichten, CBS News, 25 Aug. 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 1 Sep. 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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