Etymograph

English

rotor

From an irregular clipping of rotator, originally in mathematics, coined by English mathematician and philosopher William Kingdon Clifford based on vector, see quotations.

The story

From an irregular clipping of rotator, originally in mathematics, coined by English mathematician and philosopher William Kingdon Clifford based on vector, see quotations.

Today it means

noun A rotating part of a mechanical device; for example, in an electric motor, generator, alternator, or pump.

Language periods are conventional ranges, not dates for this word.

Etymograph / rotor