cardio

Multiple Entries:
  cardio    cardio-  

Concise Oxford English Dictionary © 2008 Oxford University Press:
cardio
noun informal cardiovascular exercise.

Concise Oxford English Dictionary © 2008 Oxford University Press:
cardio- /ˈkɑːdɪəʊ/
combining form relating to the heart: cardiograph.
– origin from Gk kardia ‘heart’.
'cardio' also found in these Oxford entries:

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