Dictionary
2 ENTRIES FOUND:

1cardio

adjective car·dio \ˈkär-dē-(ˌ)ō\

Definition of CARDIO

First Known Use of CARDIO

1984

2cardio

noun

: any type of exercise that causes the heart to beat faster and harder for a period of time

Full Definition of CARDIO

:  cardiovascular exercise

First Known Use of CARDIO

1991

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