commutate

verb6

1. •
   To reverse the direction of (a current).
2. •
   To convert from being or using an alternating current into being or using a direct current.

   • In line commutation, advantage of the a.c. supply going through zero value at every half-cycle is taken to commutate the thyristor. — 2009
3. •
   To transform, especially into a reversed or opposite form.

   • Writers change the URIs as they compose because writers commutate and manipulate language to create a variety of rhetorical experiences that can be read at once, as overlapping, or as separate. — 2007
4. •
   To commute; to change one kind of payment into another, especially to convert from several installments to a single lumpsum payment.

   • Ah, commutation. I knew there was something else. This is where you can commutate your weekly payments into a lump sum and be rid of the “system”. — 2012
5. •
   To remove or reduce the legal obligations or restrictions on

   • 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. — 1986
6. •
   To commute; to be invariant under a reversal of the positions of operands.

   • The match of two finite line segments in 2 dimensions requires 2 translations, 1 rotation, 1 scale transformation; the order is here important, and these operators cannot commutate. — 2012