acting in conjunction; agreeing in the same act or opinion; contributing to the same event or effect; cooperating.-conjoined; associate; concomitant; existing or happening at the same time.-joint and equal in authority; taking cognizance of similar questions; operating on the same objects; as, the concurrent jurisdiction of courts.-meeting in one point.-one who, or that which, concurs; a joint or contributory cause.-one pursuing the same course, or seeking the same objects; hence, a rival; an opponent.-one of the supernumerary days of the year over fifty-two complete weeks; -- so called because they concur with the solar cycle, the course of which they follow.