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Dictionary · Word part

cardi/o

A word part that means heart.

KAR-dee-oh root

What it means

The root in words about the heart. tachycardiatak-ih-KAR-dee-uhA heart rate faster than normal; in an adult, more than 100 beats per minute.tachy- fastcardi/o heart-ia conditionFull entry is a fast heart rate, bradycardiabray-dee-KAR-dee-uhA heart rate slower than normal; in an adult, fewer than 60 beats per minute.brady- slowcardi/o heart-ia conditionFull entry a slow one, an electrocardiogramih-lek-troh-KAR-dee-oh-gramA test that records the heart's electrical activity as waves on paper or a screen.electr/o electricitycardi/o heart-gram recordFull entry records the heart's electrical activity, cardiology is the study of the heart, and a cardiomyopathy is a disease of the heart muscle. The adjective is cardiacKAR-dee-akRelating to the heart.cardi/o heart-ac relating toFull entry .

Remember it

A cardiologist is a heart doctor.

At a glance

Also writtencardio-, card/i

Related terms

tachycardia

A heart rate faster than normal; in an adult, more than 100 beats per minute.

bradycardia

A heart rate slower than normal; in an adult, fewer than 60 beats per minute.

electrocardiogram

A test that records the heart's electrical activity as waves on paper or a screen.

cardiac

Relating to the heart.

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