rotary engine in which the kinetic energy of a moving fluid is converted into mechanical energy by causing a bladed rotor to rotate
"The wind turbine converts the kinetic energy of moving air into mechanical energy by spinning its large, bladed rotor."
Any of various rotary machines that use the kinetic energy of a continuous stream of fluid (a liquid or a gas) to turn a shaft.
"The massive turbine converted the kinetic energy of steam into rotational motion to drive the power generator."
In plain English: A turbine is a machine that spins when wind, water, or steam pushes against its blades to create power.
"The wind turbine began spinning quickly when the strong breeze picked up."
Usage: A turbine is a machine powered by flowing fluids like steam, water, or wind rather than electricity itself; it converts this movement into rotational force to drive generators or pumps. Do not confuse the device with a "turbine engine," which specifically refers to an aircraft propulsion system that uses turbines for thrust.
The word turbine entered English from the French language. It originally referred to a tornado or whirlwind before taking on its modern mechanical meaning.