Source : Webster's Revised Unabridged Dictionary (1913)

Concurrence \Con*cur"rence\, n. [F., competition, equality of
   rights, fr. LL. concurrentia competition.]
   1. The act of concurring; a meeting or coming together;
      union; conjunction; combination.

            We have no other measure but our own ideas, with the
            concurence of other probable reasons, to persuade
            us.                                   --Locke.

   2. A meeting of minds; agreement in opinion; union in design
      or act; -- implying joint approbation.

            Tarquin the Proud was expelled by the universal
            concurrence of nobles and people.     --Swift.

   3. Agreement or consent, implying aid or contribution of
      power or influence; co["o]peration.

            We collect the greatness of the work, and the
            necessity of the divine concurrence to it. --Rogers.

            An instinct that works us to its own purposes
            without our concurrence.              --Burke.

   4. A common right; coincidence of equal powers; as, a
      concurrence of jurisdiction in two different courts.

Source : WordNet®

concurrence
     n 1: agreement of results or opinions
     2: acting together as of agents or circumstances or events
     3: a state of cooperation [syn: {meeting of minds}]
     4: the temporal property of two things happening at the same
        time; "the interval determining the coincidence gate is
        adjustable" [syn: {coincidence}, {conjunction}, {co-occurrence}]