car·​dio | \ ˈkär-dē-(ˌ)ō How to pronounce cardio (audio) \

Definition of cardio

 (Entry 1 of 2)

: cardiovascular sense 2 cardio exercises



Definition of cardio (Entry 2 of 2)

: cardiovascular exercise 30 minutes of cardio daily

Examples of cardio in a Sentence

Recent Examples on the Web: Adjective

The freshman's exercises are still limited; even cardio workouts are considered difficult. Danielle Lerner, The Courier-Journal, "Louisville coach Chris Mack gives David Johnson's recovery a 'double thumbs-up'," 16 Aug. 2019 The machine allows runners to still get their cardio workout without the typical wear and tear by altering gravity, which allows for running with a lower percentage of body weight. Michaela Bechler, Vogue, "Inspired by the New York City Half Marathon? Experts Weigh in on Staying Injury-Free While You Train," 15 Mar. 2019 Mirror, as the name suggests, hangs on your wall and streams cardio classes right to your living room. Cheryl Wischhover, Vox, "Peloton’s $2,000 stationary bike has totally disrupted working out at home," 14 Nov. 2018 Daily cardio sweat sessions double as a natural endorphin high—and an opportunity to meet your next suitor. 7. Zoe Ruffner, Vogue, "10 Beauty Lessons We Learned From Sex and the City, in GIFs," 6 June 2018 Dr Ross and Robert Veatch, a professor at Georgetown University, argue that those options should include not only cardio-respiratory death, but a more liberal definition of brain death based on the irreversible loss of consciousness. The Economist, "When death is not the end," 26 Apr. 2018 Baptiste classes, a vigorous, cardio-intensive practice born out of Power Yoga, are favored by athletes. Noor Brara, Vogue, "Turn Up the Heat With Hot Yoga for a Total Spring Body Reboot," 13 Apr. 2018 Performing these moves in a circuit will mimic the muscular and cardio benefits of burpees with a lower risk of injury—and probably a lot less loathing. Jenny Mccoy, SELF, "Kate Upton’s Trainer Isn’t a Fan of Burpees—Here's Why the Move Is So Controversial," 27 Mar. 2018 The aerobic and cardio equipment at the facility is also easy to use. Lainey Seyler, Milwaukee Journal Sentinel, "Shorehaven's new Strength and Fitness Centers caters to seniors," 1 Mar. 2018

Recent Examples on the Web: Noun

Five workouts a week, a lot of cardio and ... bingo. Kellen Becoats,, "Sloane Stephens on Her Fitness Routine, Bingo’s Calming Effect and Ignoring the Trolls," 26 July 2019 Jorgensen finds other ways to keep up her cardio and avoid the pounding on her legs. Ben Steele, Milwaukee Journal Sentinel, "Waukesha native Gwen Jorgensen still focused on marathon training despite challenges," 18 Aug. 2019 The class is a fusion of Indian and Western dance styles and provides a cardio workout. San Diego Union-Tribune, "DAR members march in parade," 6 July 2019 She's also gotten into OrangeTheory classes—which combine cardio and strength training—and yoga. Elizabeth Gulino, House Beautiful, "The Full Details on Christina Anstead's Diet and Workout Routine," 13 July 2019 That gets everything, cardio and strength, just using your body. Roy M. Wallack,, "For Steve Aoki, the world is his gym," 26 June 2019 Exercise more than 150 minutes every week through a combination of cardio and strength training. Ladan Nikravan Hayes,, "‘Let’s Talk’: These traits increase the risk of developing breast cancer," 26 June 2019 There's a different 45-minute theme each weekend — yoga, CrossFit, cardio or strength training. Melissa Yeager, azcentral, "Hotel day passes: You don't need a room to lounge at these Phoenix hotel pools," 25 June 2019 However, regular cardio and strength-training will tone muscle and decrease the appearance of cellulite. April Franzino, Good Housekeeping, "Is It Possible to Get Rid of Cellulite? Here's What Dermatologists Say," 24 May 2019

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


1984, in the meaning defined above


1991, in the meaning defined above

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Statistics for cardio

Last Updated

4 Sep 2019

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Time Traveler for cardio

The first known use of cardio was in 1984

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English Language Learners Definition of cardio

US, informal : any type of exercise that causes the heart to beat faster and harder for a period of time


car·​dio | \ ˈkärd-ē-(ˌ)ō How to pronounce cardio (audio) \

Medical Definition of cardio

 (Entry 1 of 2)

: cardiovascular sense 2 cardio exercises worked out on cardio machines



Medical Definition of cardio (Entry 2 of 2)

: cardiovascular exercise 30 minutes of cardio daily

Comments on cardio

What made you want to look up cardio? Please tell us where you read or heard it (including the quote, if possible).


readily or continually undergoing change

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