Definition of psychoactive in English:
 psychoactive
adjective sʌɪkəʊˈaktɪvˌsaɪkoʊˈæktɪv
(chiefly of a drug) affecting the mind.
 Example sentencesExamples
-  Most ambulatory patients with alcohol dependence can be detoxified quickly and safely without the use of psychoactive drugs.
 -  Illicit psychoactive drugs agitate minds and arouse passions even among non-users.
 -  Weaver expresses concern that concomitant depression and use of psychoactive drugs might have influenced the results, given the large percentage of suicide attempts in our cohort of patients.
 -  Many smokers, however, find it impossible to quit, even with help, because of their dependence on nicotine, which is a highly addictive psychoactive drug.
 -  In this study, opioids, other psychoactive medications and dehydration were the most frequent causes of reversible delirium.
 
  Definition of psychoactive in US English:
 psychoactive
adjectiveˌsīkōˈaktivˌsaɪkoʊˈæktɪv
(chiefly of a drug) affecting the mind.
 Example sentencesExamples
-  Weaver expresses concern that concomitant depression and use of psychoactive drugs might have influenced the results, given the large percentage of suicide attempts in our cohort of patients.
 -  In this study, opioids, other psychoactive medications and dehydration were the most frequent causes of reversible delirium.
 -  Many smokers, however, find it impossible to quit, even with help, because of their dependence on nicotine, which is a highly addictive psychoactive drug.
 -  Most ambulatory patients with alcohol dependence can be detoxified quickly and safely without the use of psychoactive drugs.
 -  Illicit psychoactive drugs agitate minds and arouse passions even among non-users.