concurrent

Happening at the same time; simultaneous.

Adjective

  1. Happening at the same time; simultaneous.
    • concurrent echo - 1627 (indicated as 1626), Francis [Bacon], “III. Century.”, in Sylua Syluarum: Or A Naturall Historie. In Ten Centuries. […], London: […] William Rawley […]; [p]rinted by J[ohn] H[aviland] for William...
    • Such are the changes which science recognizes in the wire itself, as concurrent with the visual changes taking place in the eye. - 1865, John Tyndall, “On Radiation”, in Fragments of Science for Unscientific People,...
    • In 1915, concurrent with the L.S.W.R. electrification, power was supplied from the Waterloo sub-station, and the old equipment held in reserve. Some generator sets were removed, and motor generators installed for...
  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. - 1612, John Davies, Discoverie of the True Causes why Ireland was never entirely subdued:
    • the concurrent testimony of antiquity - 1738–1741, William Warburton, The Divine Legation of Moses […], volume (please specify |volume=I, II.1, or II.2), London: […] Fletcher Gyles, […], →OCLC:
  4. Joint and equal in authority; taking cognizance of similar questions; operating on the same objects.
    • the concurrent jurisdiction of courts
  5. Meeting in one point.
  6. Running alongside one another on parallel courses; moving together in space.
  7. Designed 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. - 2000, Douglas Lea, Concurrent Programming in Java, Addison-Wesley, →ISBN, page...
    • Different concurrent designs enable different ways to parallelize. - 2012, Rob Pike, “Concurrency is not Parallelism”, in Waza Conference, San Francisco, page 21:
    • More precisely, a concurrent algorithm (or concurrent program) is the description of a set of sequential state machines that cooperate through a communication medium, e. g., a shared memory. - 2012, Michel Raynal,...

    Antonyms: sequential

Origin

From Middle English concurrent, from Old French concurrent, from Latin concurrēns, present active participle of concurrō (“happen at the same time”), from con- (“with”) + currō (“run”).

Forms

more concurrent most concurrent

Derived

autoconcurrent concurrent estate concurrent indicator concurrently concurrentness nonconcurrent unconcurrent

Noun

  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. - 1667, attributed to Richard Allestree, The Causes of the Decay of Christian Piety. […], London: […] R. Norton for...
  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 - 1601, C[aius] Plinius Secundus [i.e., Pliny the Elder], “(please specify |book=I to XXXVII)”, in Philemon Holland, transl., The Historie of the...
  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.

Forms

concurrents