concurrent: Meaning and Definition of

con•cur•rent

1. occurring or existing simultaneously or side by side: concurrent attacks by land, sea, and air.
2. acting in conjunction; cooperating: the concurrent efforts of several legislators to pass the new law.
3. having equal authority or jurisdiction: two concurrent courts of law.
4. accordant or agreeing: concurrent testimony by three witnesses.
5. tending to or intersecting at the same point: four concurrent lines.

1. something joint or contributory.
2. a rival or competitor.