Jump To:

• 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.

---

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.

---

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

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

From Science Daily • Jun. 5, 2026

Though the sirens have not yet been fully brought online, their effectiveness was illustrated during a recent test run.

From Los Angeles Times • Mar. 5, 2026

Allen had a test run on her infant’s gut microbiome—the collection of bacteria and other microorganisms that inhabit the digestive tract.

From The Wall Street Journal • Mar. 3, 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

If it works for someone as friendly as him, I might as well give it a test run.

From "Better Nate Than Ever" by Tim Federle

Related Words

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