Cardiac (adjective)

1. Relating to the heart, especially its function and structure.
2. Relating to diseases or disorders of the heart.
3. Relating to the emotions, especially strong emotions.
4. Relating to the study or diagnosis of the heart and cardiovascular system.
5. Relating to the sympathetic nervous system, especially its effects on the heart rate.

Origin:

Derived from the latin word "cardia" meaning "heart".

Examples:

1. The doctor recommended a cardiac stress test to evaluate the patient's heart function.
2. The patient was diagnosed with a cardiac condition that required surgery.
3. The cardiac arrest caused by the strong emotions during the tragic event.
4. The cardiology department specialized in the study and diagnosis of cardiac diseases.
5. The cardiac response to the exercise was measured to evaluate the fitness level.