impeller

As nouns the difference between pulsator and impeller

is that pulsator is (astronomy) any pulsating astronomical object while impeller is something which or someone who impels, usually a part of a pump.

As nouns the difference between impeller and diffuser

is that impeller is something which or someone who impels, usually a part of a pump while diffuser is any person or thing that diffuses.

As nouns the difference between impeller and defuser

is that impeller is something which or someone who impels, usually a part of a pump while defuser is one who, or that which, defuses.

As nouns the difference between blade and impeller

is that blade is the sharp cutting edge of a knife, chisel, or other tool, a razor blade while impeller is something which or someone who impels, usually a part of a pump.

As a verb blade

is to skate on rollerblades.

As a noun impeller

is something which or someone who impels, usually a part of a pump.

As a verb impelled is

(impel).

As a noun impeller

is something which or someone who impels, usually a part of a pump.

As an adjective rotodynamic is

in which energy is continuously imparted to the pumped fluid by means of a rotating impeller, propeller, or rotor (unlike a positive displacement pump, in which a fluid is moved by trapping a fixed amount of fluid and forcing the trapped volume into the pump's discharge).