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.
Morphine. Morphine, a naturally occurring substance in the opium plant, is the drug that all other opiate drugs are compared to for effectiveness. While it is a highly effective pain reliever, it is also highly addictive, according to HealthFaqs.org.piate drugs are those that are derived, either naturally or synthetically, from the opium plant. There are opiate drugs that are illegal, such as heroin, and others that are legally available with a prescription.