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[stop-woch] /ˈstɒpˌwɒtʃ/
a watch with a hand or hands that can be stopped or started at any instant, used for precise timing, as in races.
Origin of stopwatch
1730-40; stop + watch Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for stopwatch
  • Read the paper out loud all the way through without stopping, and use a stopwatch to time the delivery.
  • The tools of his trade are simple--a stopwatch, a two-way radio, and a cell phone that never stops ringing.
  • If you had a stopwatch and timed that, it would take about one second.
  • Start and end your meetings according to a stopwatch that everyone in the room can see.
  • Use a stopwatch and time how long it takes to fill a quart jar.
  • He's holding a stopwatch while he injects a saline solution.
  • In the old days the thing dropped through the efforts of six burly workmen and a guy with a stopwatch.
  • Nobody had a stopwatch, nothing can be proven definitively, but that's the consensus.
  • So, it's a tick slower in acceleration, although it takes a stopwatch to notice.
  • One stopwatch is designated as the official test stopwatch, the second is the backup stopwatch.
British Dictionary definitions for stopwatch


a type of watch used for timing events, such as sporting events, accurately, having a device for stopping the hand or hands instantly
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for stopwatch

also stop-watch, 1737, from stop (v.) + watch (n.).

Online Etymology Dictionary, © 2010 Douglas Harper
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