Definition of "cardio" []

• Cardiovascular; pertaining to the health of the circulatory and respiratory systems. (adjective)
• ) cardiovascular exercise (noun)

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• "He had what they call cardio circulation collapse, meaning a significant drop in blood pressure."
• "Hell, if fabulous cardio is the No. 1 criteria for being the quarterback of the Redskins, Shanahan ought to be in Kenya looking to bring back a distance runner."
• "Cardio exercise usually refers to aerobic activity, such as running and swimming, but any exercise that significantly raises your heart rate and keeps it there could be described as cardio."