psy·cho·ac·tive 
(sī′kō-ăktĭv)
(sī′kō-ăktĭv)adj.
Affecting the mind or mental processes. Used of a drug.
- Megara
- megaron
- megascopic
- megascopically
- megasporangium
- megaspore
- megasporic
- megasporocyte
- megasporogenesis
- megasporophyll
- megastructure
- megatherium
- megaton
- megatonnage
- megavitamin
- megavolt
- megavoltage
- Megawati Soekarnoputri
- Megawati Sukarnoputri
- megawatt
- megawattage
- Meghalaya
- Megiddo
- Megillah
- Megrez