Meaning of COMMUTATOR in English

COMMUTATOR

/ ˈkɒmjuteɪtə(r); NAmE ˈkɑːm-/ noun ( physics )

1.

a device that connects a motor to the electricity supply

2.

a device for changing the direction in which electricity flows

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.