trial run


Definition of trial run 

: a testing exercise : experiment

Examples of trial run in a Sentence

They will put the software through many trial runs before putting it on the market. We will have to give the machine a trial run.

Recent Examples on the Web

Shortly after my separation came my trial run: A thyroid ultrasound initially appeared to show a malignancy that was soon declared normal. Washington Post, "When you’re aging alone, who will take care of you if you get sick?," 9 July 2018 The Oakland Raiders didn't wait long to end their trial run on Christian Hackenberg. Michael Middlehurst-schwartz, USA TODAY, "Raiders waive QB Christian Hackenberg three weeks after trading for him," 12 June 2018 There was one big question hovering over the Boston Symphony Orchestra’s ambitious programs at Carnegie Hall this week: How would the tenor Jonas Kaufmann fare in his trial run in one of the mightiest roles in opera, Wagner’s Tristan? Anthony Tommasini, New York Times, "Review: Jonas Kaufmann Takes a Big Step Toward ‘Tristan’," 13 Apr. 2018 Enterprise Products had a trial run in late April, when a VLCC docked but crude was not loaded. Andrea Leinfelder, Houston Chronicle, "Tight squeeze: Supersized crude carrier calls on Texas City port," 22 June 2018 Boynton Beach police identified the seventh person killed by a Brightline train since trial runs began in 2017 as Lakeland resident Christopher Bailey, 46. David J. Neal, miamiherald, "Seventh fatality involving a Brightline train looks like a suicide, cops say," 4 June 2018 The Steamship Authority cleared a ferry to return to service Wednesday morning after a successful trial run of the vessel, which had several trips canceled Monday and Tuesday, the semipublic agency said in a statement Wednesday. Jeremy C. Fox,, "Steamship Authority to test Nantucket ferry after trips canceled for mechanical issues," 11 July 2018 In a trial run of this new software at two U.S. hospitals, the Google AI was 95 percent and 93 percent accurate in its predictions of patient mortality. Avery Thompson, Popular Mechanics, "New Google AI Calculates the Odds You'll Survive a Hospital Stay," 19 June 2018 On May 18, after a one-night layover at advanced base camp, at 21,300 feet, Jornet made a trial run—literally—on some sections. Nick Heil, Outside Online, "Are Kilian Jornet's Speed Records Too Good to Be True?," 12 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'trial run.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of trial run

1903, in the meaning defined above

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Last Updated

18 Oct 2018

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Time Traveler for trial run

The first known use of trial run was in 1903

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More Definitions for trial run

trial run


English Language Learners Definition of trial run

: a test in which a product or procedure is tried in order to see if it works correctly

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one that holds something together

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