Multiphase and Polyphase

Multiphase adjective - Of an electrical system that uses or generates two or more alternating voltages of the same frequency but differing in phase angle.

Polyphase is a synonym for multiphase. In some cases you can use "Polyphase" instead an adjective "Multiphase".

Polyphase adjective - Of an electrical system that uses or generates two or more alternating voltages of the same frequency but differing in phase angle.

Multiphase is a synonym for polyphase. You can use "Multiphase" instead the word "Polyphase" as an adjective or a noun.