Back-formation from commutation (late 19th century).
- (transitive, electronics) To reverse the direction of (a current).
2013, Freidrich Nettel, Comparison of Principal Points of Standards for Electrical Machinea & Transformers: German, British, & American Standards compared, ISBN 366226529X, page 19:
- Continuously rated machines shall be required to commutate successfully momentary loads of 150% of the Amperes corresponding to the continuous rating keeping the rheostat set for rated load excitation.
- (transitive, electronics) To convert from being or using an alternating current into being or using a direct current.
- (intransitive, mathematics) To commute; to be invariant under a reversal of the positions of operands.
- (transitive, finance) To commute; to change one kind of payment into another, especially to convert from several installments to a single lumpsum payment.
- (transitive, law) To remove or reduce the legal obligations or restrictions on;
1986, Brian J. Young, In Its Corporate Capacity: The Seminary of Montreal as a Business Institution 1816-1876., ISBN 0773561099, page 52:
- Specifically, the seminary was challenged by industrial millers who petitioned to build steam-powered mills and by large Montreal property holders who demanded that the crown commutate their lands.
- (transitive) To transform, especially into a reversed or opposite form.