One who, or that which, concurs; a joint or contributory cause.
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.
One who accompanies a sheriff's officer as witness.
One pursuing the same course, or seeking the same objects; hence, a rival; an opponent.
Acting in conjunction; agreeing in the same act or opinion; contributing to the same event or effect.
Joint and equal in authority; taking cognizance of similar questions; operating on the same objects.
Belonging to the same period; contemporary.
Happening at the same time; simultaneous.
Running alongside one another on parallel courses; moving together in space.
Designed to run independently, rather than sequentially, using various mechanisms, such as threads, event loops or time-slicing.
Meeting in one point.
The fact of a thing occurring simultaneously with something else; correlation.
An instance of a thing occurring simultaneously with something else; coïncidence.