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Definition of Fentanyl
1. Noun. Trade names of a narcotic analgesic that can be inhaled and that acts on the central nervous system and may become addictive; used as a veterinary anesthetic and with other drugs before, during, and after surgery; also used as a nonlethal gas to incapacitate people in hostage situations; also abused as a recreational drug.
Definition of Fentanyl
1. Noun. (pharmaceutical drug) A particular narcotic painkiller. ¹
¹ Source: wiktionary.com
Definition of Fentanyl
1. a narcotic opioid [n -S]
Medical Definition of Fentanyl
1.