Definitions
1.nounOne who, or that which, concurs; a joint or contributory cause.
2.nounOne pursuing the same course, or seeking the same objects; hence, a rival; an opponent.
3.nounOne 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.
4.nounOne who accompanies a sheriff's officer as witness.
5.adjectiveHappening at the same time; simultaneous.
6.adjectiveBelonging to the same period; contemporary.
7.adjectiveActing in conjunction; agreeing in the same act or opinion; contributing to the same event or effect.
8.adjectiveJoint and equal in authority; taking cognizance of similar questions; operating on the same objects."the concurrent jurisdiction of courts"
9.adjectiveMeeting in one point.
10.adjectiveRunning alongside one another on parallel courses; moving together in space.
11.adjectiveInvolving more than one thread of computation.