1. Synthetic narcotic drug similar to morphine but less habit-forming; used in narcotic detoxification and maintenance of heroin addiction
   - methadone, methadone hydrochloride, methadon, dolophine hydrochloride, fixer

Type of: narcotic

• Isle of Wight
• Isle Royal National Park
• isles of Langerhans
• Isles of Scilly
• islet
• islets of Langerhans
• ism
• Ismaili
• Ismailian
• Ismailism
• ISN
• isn't
• iso-
• isoagglutination
• isoagglutinin
• isoagglutinogen
• isoantibody
• isobar
• isobaric
• isobilateral
• isobutyl nitrite
• isobutylene
• isobutylphenyl propionic acid
• isocarboxazid
• isochoric