n. (pl. -ies) 1 an overwhelming feeling of joy or rapture. 2 Psychol. an emotional or religious frenzy or trancelike state. 3 sl. methylenedioxymethamphetamine, a powerful stimulant and hallucinatory drug (see MDMA).
[ ME f. OF extasie f. LL extasis f. Gk ekstasis standing outside oneself f. ek out + histemi to place ]