2. (foll by with) to associate (oneself) or be associated, esp as a subordinate or subsidiary; bring or come into close connection: he affiliated himself with the Union. b. (as modifier): an affiliate member.
Opiate is a term classically used in pharmacology to mean a drug derived from opium. Opioid, a more modern term, is used to designate all substances, both natural and synthetic, that bind to opioid receptors (including antagonists}. Opiates are alkaloid compounds naturally found in the opium poppy plant Papaver somniferum.
Opium: An addictive narcotic drug that is derived from the unripe seedpods of the opium poppy. Preparations of opium were called laudanum.Derivatives of opium include paregoric (a drug used to treat diarrhea), morphine, and heroin.For centuries, opium was used as a painkiller in the Middle East and Asia.reparations of opium were called laudanum. Derivatives of opium include paregoric (a drug used to treat diarrhea), morphine, and heroin. For centuries, opium was used as a painkiller in the Middle East and Asia.