occurring or existing simultaneously or side by side: concurrent attacks by land, sea, and air.
acting in conjunction; cooperating: the concurrent efforts of several legislators to pass the new law.
having equal authority or jurisdiction: two concurrent courts of law.
accordant or agreeing: concurrent testimony by three witnesses.
tending to or intersecting at the same point: four concurrent lines.
—noun
something joint or contributory.
Archaic. a rival or competitor.