Noun psychoactive substance has 1 sense
  1. psychoactive drug, mind-altering drug, consciousness-altering drug, psychoactive substance - a drug that can produce mood changes and distorted perceptions
    --1 is a kind of drug
    --1 has particulars:
     designer drug; dronabinol; euphoriant; hallucinogen, hallucinogenic drug, psychedelic drug, psychodelic drug; tetrahydrocannabinol, THC
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