a stimulant drug that is chemically related to mescaline and amphetamine and is used illicitly for its euphoric and hallucinogenic effects; it was formerly used in psychotherapy but in 1985 it was declared illegal in the United States
"MDMA is often used at parties because it enables partygoers to remain active for long periods of time"
3,4-methylenedioxymethamphetamine, a synthetic entactogen of the methylenedioxyphenethylamine family.