1. a substance that stimulates or increases activity, especially of a bodily function or organ
Usage: medical; formal

1. having the quality of exciting or stimulating
Usage: formal; rare

Examples

• The doctor prescribed an excitant to help stimulate the patient’s heart rate.
• Caffeine is a common excitant found in coffee and tea.
• The excitant properties of the medication made it useful for treating certain conditions.
• Researchers studied the excitant effects of various compounds on nerve cells.
• The excitant drug helped restore normal function to the sluggish organ.