pac·​er | \ ˈpā-sər How to pronounce pacer (audio) \

Definition of pacer

1 : one that paces specifically : a horse whose predominant gait is the pace
2 : pacemaker

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Synonyms & Antonyms for pacer


bellwether, leader, pacemaker, pacesetter, trendsetter


follower, imitator

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Examples of pacer in a Sentence

a highly competitive industry in which any company that isn't a pacer quickly becomes a belly-up also-ran

Recent Examples on the Web

In the Breaking2 project, Kipchoge ran 2:00:25 but the time is not eligible for a world record due to the rotating cast of pacers used as well as other factors in optimizing the race to near-perfect conditions. Chris Chavez,, "Eliud Kipchoge Returns To Berlin Marathon In 2018 To Lower 2:03:05 Personal Best," 11 June 2018 Semenya tucked behind a pacer for a 57.9-second first lap before cruising to her eighth career performance under 1:56. Andrew Greif,, "Shelby Houlihan wins at Prefontaine Classic while Caster Semenya dismisses talk of IAAF gender rules," 26 May 2018 D’haene had plenty of support from his sponsor Salomon, including a team of pacers who took turns carrying food and water and running with him. Washington Post, "Hikers, runners, climbers scramble toward ever-faster feats," 27 Oct. 2017 The bad news for Dibaba is that since the elimination of pacers, Kiplagat is undefeated in Chicago. Chris Chavez,, "Chicago Marathon 2017 Preview: Galen Rupp, Jordan Hasay Lead American Contenders," 5 Oct. 2017 My running pacer and friend Lino literally counted out the miles for me. Lori Nickel, Milwaukee Journal Sentinel, "In Our Shoes: Ronetta Watson meets every challenge," 25 Oct. 2017 Laz also frowns on the use of pacers, earbuds, and conventional running advice. George Pendle, Esquire, "The Masochist's Marathon," 26 July 2017 The runners will also employ careful drafting behind pacers, who run ahead for short periods of time to create a smooth slipstream for the competitors. National Geographic, "Runners Aim to Shatter 'Unbreakable' Two-Hour Marathon Barrier," 4 May 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'pacer.' 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 pacer

1616, in the meaning defined at sense 1

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Statistics for pacer

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Time Traveler for pacer

The first known use of pacer was in 1616

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More Definitions for pacer


pac·​er | \ ˈpā-sər How to pronounce pacer (audio) \

Medical Definition of pacer

: pacemaker sense 2 electronic cardiac pacers

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More from Merriam-Webster on pacer

Rhyming Dictionary: Words that rhyme with pacer

Thesaurus: All synonyms and antonyms for pacer

Spanish Central: Translation of pacer Encyclopedia article about pacer

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showing courage and determination

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