The definition of opiate is something related to opium, an addictive narcotic made from the poppy, or is something that makes you sleep or dazed.(adjective)
Heroin is an example of a drug that would be described as an opiate drug.
An opiate is defined as an addictive drug made from the opium poppy that has morphine-like, soothing effects.(noun)
The drug heroin is an example of an opiate.
See opiate in Webster's New World College Dictionary
Origin: ML opiatum: see opium
See opiate in American Heritage Dictionary 4
Origin: Middle English
Origin: , from Medieval Latin opiātum
Origin: , from Latin opium, opium; see opium.
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