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• test run
  test run

  noun

  an act of trying out a process, piece of equipment, program, etc., to see if it works properly.
• test-run
  test-run

  verb (used with object)

  to try out (a process, pieces of equipment, etc.) to see if it works; do a test run on.

test run

¹ American  

[test ruhn] / ˈtɛst ˌrʌn /

noun

test runs plural

1. an act of trying out a process, piece of equipment, program, etc., to see if it works properly.

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test-run ² American  

[test ruhn] / ˈtɛst ˌrʌn /

verb (used with object)

test-ran, test-running

1. to try out (a process, pieces of equipment, etc.) to see if it works; do a test run on.

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verb (used without object)

test-ran, test-running

1. to undergo a test run or perform in a specified way in a test run.

Other Word Forms

Derived Forms

• test-runner
  noun

Inflected Forms

Nouns

• test runs
  plural

Example Sentences

But the day of the shoot — there was a biscuit rig on the car, and the gentleman working the biscuit rig did a test run and lost control of the car.

From Los Angeles Times • Jun. 18, 2026

They will, however, continue to have an air-conditioning system to cool the onboard computers, said Gatik co-founder and Chief Engineer Apeksha Kumavat, who sat next to me during the test run in Phoenix’s midday heat.

From The Wall Street Journal • Jun. 8, 2026

In a test run that excluded magnetic fields entirely, the protostars moved farther apart instead of closer together.

From Science Daily • Jun. 5, 2026

With that date fast approaching, the administration has telegraphed that Cook’s case is a test run for an even more explosive confrontation with Powell.

From Slate • Jan. 12, 2026

Without anyone giving it a test run ahead of time?

From "The First State of Being" by Erin Entrada Kelly

Related Words

• effort
• examination
• experiment
• investigation
• probation
• struggle
• testing