A substance that elicits an active physiological or behavioral response.
More example sentences
- Some people find that coffee brings out tremor; this is due to the presence of caffeine, which is an excitant; these effects are not, however, universal.
- The resulting synaptic inhibition is characterized by either a depressant or an excitant effect, depending on the population of cells involved.
early 17th century: perhaps suggested by French excitant.
More definitions of excitantDefinition of excitant in:
- The British & World English dictionary