The *(term) for the property of some collection of active processes that allows them to be active at any time, including at the same time, or in varying orders. Single-processor systems take advantage of the re-ordering allowance to simulate this simultaneous activity.

_(Distributed) systems are most often designed to take advantage of concurrency whenever possible.

Some programming languages support concurrency implicitly in their semantics. The language itself is then said to be "_(concurrent)".
