Meaning of COMMUTATION in English
n.1 the act or process of commuting or being commuted (in legal and exchange senses).
2 Electr. the act or process of commutating or being commutated.
3 Math. the reversal of the order of two quantities.
Phrases and idioms:
commutation ticket US a season ticket.
Etymology: F commutation or L commutatio (as COMMUTE)
Oxford English vocab. Оксфордский английский словарь. 2012