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 The flavors are great, but certainly not worth the chewing cardio required for some pieces. Grace Wong,, "We tried Chipotle’s new carne asada and the verdict is complicated," 19 Sep. 2019 More organs can be used from a donor who is dead according to brain criteria than after cardio-respiratory failure. The Economist, "When death is not the end," 26 Apr. 2018 While taking classes ranging from cardio and yoga to boxing, customers can see key metrics like their heartbeats-per-minute (or BPM) and calories burned. Sara Ashley O'brien, CNN, "This startup wants to put a personal trainer in your mirror," 8 Oct. 2019 Knockout Fitness is the answer for those looking to incorporate cardio and self-defense with a one-two punch., "2019 Orlando Sentinel Best Bets: Beauty & Wellness winners," 6 Oct. 2019 Meridiana’s resident-only fitness center is outfitted with the finest cardio machines, spin bikes, treadmills, free weights and strength systems. Houston Chronicle, "Meridiana residents splash away in resort-style pool," 21 July 2019 Several cardio machines also limit the impact on joints than the typical equipment through the use of less-pronounced motions or cushioned platforms. Jim Riccioli, Milwaukee Journal Sentinel, "The new YMCA Wellness Center in New Berlin aims to help older active adults with healthy living," 24 June 2019 Shapes Fitness for Women is a women's-only fitness club which features a full-service fitness club with group classes, strength equipment, cardio equipment, an infrared sauna and a kids zone. Roy Kent, Houston Chronicle, "THIS WEEK: Fort Bend County Commissioner Andy Meyers to update chamber members on Precinct 3," 15 Sep. 2019 There’s now a connected fitness machine for weight training, rowing, cardio fitness, and boxing, each ranging between $1,500 to $3,000 for the equipment with a monthly $40 to $50 subscription fee to access content. Natt Garun, The Verge, "Equinox will start selling its own Peloton-like bikes and treadmills this winter," 7 Aug. 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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Time Traveler

The first known use of cardio was in 1984

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Cite this Entry

“Cardio.” The Dictionary, Merriam-Webster Inc., Accessed 5 December 2019.

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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

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