Cardio Definition
kärdē-ō
adjective
Cardiovascular.
Webster's New World
noun
Exercise that increases heart rate.
Webster's New World
prefix
Heart.
Cardiovascular.
American Heritage
Origin of Cardio
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Greek kardio- from kardiā heart kerd- in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
-
From a shortening of cardiovascular.
From Wiktionary
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