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cardio-

a combining form meaning “heart,” used in the formation of compound words: cardiogram.

Also especially before a vowel, cardi-.

Origin of cardio-

< Greek kardio-, combining form of kardía

Words nearby cardio-

cardinalfish, cardinality, cardinals, carding, carding machine, cardio-, cardio-omentopexy, cardioaccelerator, cardioactive, cardioaortic, cardioarterial

Example sentences from the Web for cardio

Some supporters keep pace, and others trail behind walking, there to observe Booker in the flesh more than for the cardio.

The Ugly Truth About Cory Booker, New Jersey’s Golden Boy |Olivia Nuzzi |October 20, 2014 |DAILY BEAST
Those carbs need to be burned with cardio, or else weight loss will plateau.

Dispelling the ‘Chronic Cardio’ Myth |Jason Fitzgerald |April 23, 2014 |DAILY BEAST
Depending on who you ask, cardio exercise is either the fountain of youth or the ticket to an early grave.

Dispelling the ‘Chronic Cardio’ Myth |Jason Fitzgerald |April 23, 2014 |DAILY BEAST
Their roster also includes Reformer, Power Tower, Cardio Chair, and many other Pilates-based classes.

12 Priciest Fitness Classes (Actually Worth the Splurge) |DailyBurn |February 3, 2014 |DAILY BEAST

Tone is their MegaFormer-based class, drawing from Pilates with a strength and cardio twist.

12 Priciest Fitness Classes (Actually Worth the Splurge) |DailyBurn |February 3, 2014 |DAILY BEAST

British Dictionary definitions for cardio

cardio-

before a vowel cardi-

combining form

heart cardiogram

Word Origin for cardio-

from Greek kardia heart

Medical definitions for cardio

cardio-

pref.

Heart:cardiovascular.

Cardia:cardiodiosis.