car ‧ di ‧ o /ˈkɑːdiəʊ $ ˈkɑːrdioʊ/ BrE AmE noun [uncountable] informal
any type of exercise that makes the heart stronger and healthier, for example running:
a combination of cardio, weight training, and kung fu
car ‧ di ‧ o /ˈkɑːdiəʊ $ ˈkɑːrdioʊ/ BrE AmE noun [uncountable] informal
any type of exercise that makes the heart stronger and healthier, for example running:
a combination of cardio, weight training, and kung fu
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012