EXCITANT definition and meaning | Collins English Dictionary An excitant is a drug or other agent that causes a response in or stimulates the activity of a body part The drug is an excitant of heart muscle, and the heart rate is temporarily increased Caffeine acts as an excitant which stimulates your nervous system
EXCITANT Definition in Psychology Excitant is an important concept in the fields of behavioral science and neuroscience It is used to describe an agent or stimulus that can cause excitement or arousal in an organism