Of, relating to, or happening during run time.(adjective)
Time during which a program is running a process.(noun)
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Use "run-time" in a sentence
"There is not one ounce of intrigue or suspense throughout the entire run-time, but instead confusion and frustration."
"The European release of the film was re-edited by Italian horror film master Dario Argento, with a shorter run-time."
"Leno is the man of the hour right now, but he is probably on board with the move back to 11: 30 despite the shortened run-time, as he never wanted to leave the time slot that served him so well for over a decade."