English Reference
noun

runtime

n.
run·time

  1. 01 B2 Upper Intermediate Technical Computing

    the time when a computer program is actually working or running.

    the period during which a computer program is executing, as opposed to other phases of the software lifecycle like compile time.

    Simple

    The app crashed at runtime because it couldn't find the database.

    In context

    The developers spent weeks optimizing the code to reduce runtime errors and improve the overall efficiency of the server-side processing.

    Usage

    Often used as a compound noun or as an adjective modifying 'error' or 'environment'.

    execution time
  2. 02 B2 Upper Intermediate Theatre

    the total length of time a movie, play, or piece of music lasts.

    the total duration of a film, theatrical performance, or recorded media from start to finish.

    Simple

    The movie has a runtime of three hours, so we should buy snacks.

    In context

    Despite its lengthy runtime, the documentary maintains a brisk pace that keeps the audience engaged through every historical reenactment.

This entry
Level B2 · Upper Intermediate
Frequency Occasional
Updated