pacer

noun

pac·​er ˈpā-sər 

1

: one that paces

specifically : a horse whose predominant gait is the pace

2

: pacemaker

Synonyms of pacer

• leader
• pacemaker

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

Kerr and his pacers lined up on the outside, wary of cutting in from wide a year on from Cameron Myers toppling over and out just behind him in the 2025 Diamond League meet, where Kerr finished second in the 1500 meters. — George Edwards, New York Times, 21 July 2026

One week our pacer was an acupuncturist who heals veterans and hikes for weeks on end with all of her belongings on her back. — Heidi Stevens, Chicago Tribune, 10 July 2026

England pacers Jofra Archer and Josh Tongue shared four wickets. — ABC News, 9 July 2026

Word History

First Known Use

1616, in the meaning defined at sense 1

Rhymes for pacer

• acer
• baser
• chaser
• racer
• spacer
• tracer
• eraser
• replacer
• radiotracer

Medical Definition

pacer

noun

pac·​er ˈpā-sər 

: pacemaker sense 2

electronic cardiac pacers