Final answer:
Cardiac refers to something relating to the heart, such as the muscle or conditions associated with it.
Step-by-step explanation:
Cardiac refers to something relating to the heart. In biology, cardiac is often used to describe the heart or processes and conditions associated with it. For example, cardiac muscle refers to the specific type of muscle found in the heart, which allows it to contract and pump blood. Cardiac arrest is a medical condition where the heart suddenly stops beating. So, in summary, cardiac primarily relates to the heart and its functions.
Learn more about Definition of cardiac