Definition of psychostimulant in English:

psychostimulant

Pronunciation /ˌsʌɪkəʊˈstɪmjʊlənt/ /ˌsʌɪkəʊˈstɪmjʊl(ə)nt/

noun

Medicine Pharmacology
  • A drug that stimulates the activity of the mind or nervous system.

adjective

Medicine Pharmacology
  • That increases a person's activity and alertness; stimulatory; antidepressive.

Origin

1960s. From psycho- + stimulant.