Turbine

A rotary device actuated by impulse or reaction of a fluid flowing through vanes or blades that are arranges around a central shaft.

Aviation Maintenance Technician Handbook — Airframe, p. G-37

Also defined in 1 more source

A wheel fitted with vanes, or buckets, radiating outward from its circumference. The reactive or aerodynamic force caused by the fluid flowing through the vanes is converted into mechanical power that spins the shaft on which the wheel is mounted.

Aviation Maintenance Technician Handbook — Powerplant, p. G-29

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