Happening at the same time; simultaneous. / Belonging to the same period; contemporary. / Acting in conjunction; agreeing in the same act or opinion; contributing to the same event or effect.

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.

plural of concurrent

The state or quality of being concurrent.

in a concurrent manner; at the same time

plural of concurrence

(US, law, colloquial) A concurrence in an order denying rehearing en banc.

Agreement; concurring. / An instance of simultaneous occurrence.

The property or an instance of being concurrent; something that happens at the same time as something else.

plural of concurrency