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"runtime" vs "run-time"

Both "runtime" and "run-time" are correct, but "runtime" is more commonly used in modern English. The trend has been to combine words into a single word, known as a closed compound, rather than using a hyphen.

Last Updated: March 31, 2024

runtime

This is the more commonly used form in modern English.

The term "runtime" refers to the duration during which a program is running or the length of a movie or play. It is a closed compound word.

Alternatives:

  • run-time
  • execution time
  • operating time
  • active time
  • elapsed time

run-time

This form is also correct but less common in modern English.

The term "run-time" is used to refer to the duration during which a program is running or the length of a movie or play. It is a hyphenated compound word.

Alternatives:

  • runtime
  • execution time
  • operating time
  • active time
  • elapsed time

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