1. The science of the heart.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• cariology,
• cardilogy,
• cardioligy,
• cardology,
• cardilology,
• cardioligs,
• cardiolgy,
• cadiology,
• cardioloy,
• cardiologic,
• cardiollogy,
• cardiologgy,
• cardiolog,
• cardiopahy,
• parosology,
• cardilagy,
• cardoilgy,
• carpology,
• carpholgy,
• cyriology

• cardiel,
• cardiologic,
• cardillo,
• cardiologist,
• cardello.

The adjective form of the word "cardiology" is "cardiological".

The plural of the "cardiology" can be the "cardiologies".

The singular of the "cardiology" can be the "cardiology".