Definition of fentanyl in English:



mass nounMedicine
  • A powerful opioid drug used in the treatment of severe pain.

    • ‘In Australia, the common use for fentanyl is indeed an anaesthetic agent that's injected to knock a patient out before they get the gas.’
    • ‘In some centers, no sedation is used; in others, benzodiazepines, such as midazolam or diazepam, are used for sedation, sometimes in conjunction with a narcotic, such as fentanyl.’
    • ‘Described as being 30 to 100 times more powerful than morphine, fentanyl is a synthetic opioid that is also used to provide relief to persons suffering with chronic pain.’
    • ‘Opiates, including morphine and fentanyl, are powerful painkillers and anesthetics, but they also can slow a person's breathing to a dangerous rate.’
    • ‘Naloxone and flumazenil effectively terminate the effects of fentanyl and midazolam, respectively.’
    • ‘As a result, pharmaceutical companies have produced alternative opioids such as oxycodone, hydromorphone, fentanyl, methadone, and tramadol.’
    • ‘Common narcotic medications used are fentanyl citrate, morphine sulfate, and meperidine hydrochloride.’
    • ‘While waiting for obstetric and anesthesia backup, the clinician administered fentanyl, midazolam and cefotetan.’
    • ‘Other drugs administered included fentanyl, lorazepam, midazolain, propofol, and hydromorphone.’
    • ‘Narcotics such as morphine, meperidine, fentanyl, and methadone typically cause mild arterial hypercapnia in clinically recommended doses.’


1960s: apparently from fen- (representing phen-) + -t- + an- + -yl.