adjective Date: 1892 of, relating to, or operating by means of a combination of three circuits energized by alternating electromotive forces that differ in phase by one third of a cycle
THREE-PHASE
Meaning of THREE-PHASE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012