Dictionary:

concurrency

  (kən-kûr'ən-sē, -kŭr'-)

Concurrence: “Concurrency of development with deployment . . . has almost always proven counterproductive” (Harold Brown).

Operations that are performed simultaneously within the computer. For example, dual-core CPUs provide complete overlapping of two independent processes. See dual core, hyperthreading, multiprocessing, multitasking, multithreading, SMP and MPP.

Circumstance in which at least two insurance policies provide identical coverage for the same risk. See also Double Recovery.