[1] : The Collaborative International Dictionary of English v.0.48

commutation \com`muta"tion\, n. l. commutatio: cf. f.
   commutation.
   1. a passing from one state to another; change; alteration;
      mutation. r.
      1913 webster

            so great is the commutation that the soul then hated
            only that which now only it loves.    --south.
      1913 webster

   2. the act of giving one thing for another; barter; exchange.
      obs.
      1913 webster

            the use of money is . . . that of saving the
            commutation of more bulky commodities. --arbuthnot.
      1913 webster

   3. law the change of a penalty or punishment by the
      pardoning power of the state; as, the commutation of a
      sentence of death to banishment or imprisonment.
      1913 webster

            suits are allowable in the spiritual courts for
            money agreed to be given as a commutation for
            penance.                              --blackstone.
      1913 webster

   4. a substitution, as of a less thing for a greater, esp. a
      substitution of one form of payment for another, or one
      payment for many, or a specific sum of money for
      conditional payments or allowances; as, commutation of
      tithes; commutation of fares; commutation of copyright;
      commutation of rations.
      1913 webster

   5. regular travel from a place of residence to a place where
      one's daily work is performed; commuting. most often, such
      travel is performed between a suburb and a nearby city.
      1913 webster

   angle of commutation astron., the difference of the
      geocentric longitudes of the sun and a planet.

   commutation of tithes, the substitution of a regular
      payment, chargeable to the land, for the annual tithes in
      kind.

   commutation ticket, a ticket, as for transportation, which
      is the evidence of a contract for service at a reduced
      rate. see 2d commute, 2.
      1913 webster
see also:
angle of commutation commutation of tithes commutation ticket commute 

[2] : The Collaborative International Dictionary of English v.0.48

commutation ticket \com`muta"tion tick"et\
   a ticket for transportation at a reduced rate in
   consideration of some special circumstance, as increase of
   travel; specif., a ticket for a certain number of, or for
   daily, trips between neighboring places at a reduced rate,
   such as are commonly used by those doing business in a city
   and living in a suburb. commutation tickets are excepted from
   the prohibition against special rates contained in the
   interstate commerce act of feb. 4, 1887 --24 stat. 379, and
   in 145 u. s. 263 it was held that party tickets were also
   excepted as being "obviously within the commuting principle."
   webster 1913 suppl.

[3] : WordNet (r) 2.0

commutation ticket
     n : a ticket good for several trips or to attend a season of
         entertainments; sold at a reduced rate syn: season
         ticket
see also:
season ticket 

Commutation >> C Words
Commutation, definition of term: Commutation
commutation_pag1.html

Ticket >> T Words
Ticket, definition of term: Ticket
ticket_pag1.html

Straight Ticket >> S Words
Straight Ticket, definition of term: Straight Ticket
straight+ticket_pag1.html

Split Ticket >> S Words
Split Ticket, definition of term: Split Ticket
split+ticket_pag1.html

Season Ticket >> S Words
Season Ticket, definition of term: Season Ticket
season+ticket_pag1.html

Ticket Of Leave >> T Words
Ticket Of Leave, definition of term: Ticket Of Leave
ticket+of+leave_pag1.html