Final answer:
Tachycardia is the medical term that means 'rapid heart rate'. It is a condition characterized by a heart rate that exceeds the normal resting rate.
Step-by-step explanation:
The medical term that means 'rapid heart rate' is tachycardia. Tachycardia is a condition characterized by a heart rate that exceeds the normal resting rate. It can be caused by various factors such as stress, exercise, medications, or underlying medical conditions.
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