| impulse turbine | |
| —n | |
| Compare reaction turbine a turbine in which the expansion of the fluid, often steam, is completed in a static nozzle, the torque being produced by the change in momentum of the fluid impinging on curved rotor blades | |
| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |