concurrentadj/kəŋˈkʌɹənt/

• 1

  Happening at the same time; simultaneous.

  • concurrent echo
  • Such are the changes which science recognizes in the wire itself, as concurrent with the visual changes taking place in the eye.
• 2

  Belonging to the same period; contemporary.

• 3

  Acting in conjunction; agreeing in the same act or opinion; contributing to the same event or effect.

  • I join with these laws the personal presence of the king's son, as a concurrent cause of this reformation.
  • the concurrent testimony of antiquity
• 4

  Joint and equal in authority; taking cognizance of similar questions; operating on the same objects.

  • the concurrent jurisdiction of courts
• 5

  geometrymathematicssciencesMeeting in one point.

• 6

  Running alongside one another on parallel courses; moving together in space.

• 7

  computingengineeringmathematicsDesigned to run independently, rather than sequentially, using various mechanisms, such as threads, event loops or time-slicing.

  • Informally, a concurrent program is one that does more than one thing at a time. […] However, this simultaneity is sometimes an illusion.
  • Different concurrent designs enable different ways to parallelize.

concurrentnoun/kəŋˈkʌɹənt/

• 1

  One who, or that which, concurs; a joint or contributory cause.

  • To all affairs of importance there are three necessary concurrents […] time, industry, and faculties.
• 2

  One pursuing the same course, or seeking the same objects; hence, a rival; an opponent.

  • Menander […] had no concurrent in his time that came neere vnto him
• 3

  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.

• 4

  One who accompanies a sheriff's officer as witness.