run time
1. The elapsed time to perform a computation on a particular computer.
2. The amount of time a processor actually spent on a particular process and not on other processes or overhead (see time-sharing).
3. The period of time during which a program is being executed, as opposed to compile-time or load time. The term should be hyphenated when used as an adjective.
4. run-time support.
(2001-09-14)