fentanyl
noun
fen·ta·nyl
ˈfen-tə-ˌnil 
: a synthetic opioid narcotic analgesic C22H28N2O with pharmacological action similar to morphine that is administered transdermally as a skin patch and in the form of its citrate C22H28N2O·C6H8O7 is administered orally or parenterally (as by intravenous or epidural injection)
Examples of fentanyl in a Sentence
Recent Examples on the Web
Both were federally charged with conspiracy to possess with intent to distribute heroin and fentanyl.
—
Robert McGreevy,
FOXNews.com,
3 July 2026
The suit did not specify what drug was involved, but said responding officers and paramedics gave the teen who sued multiple doses of Narcan, which is used to reverse overdoses caused by opioids such as fentanyl.
—
James Queally,
Los Angeles Times,
30 June 2026
Data from the Maryland Department of Health shows there were 20 overdose deaths between June 2025 and May 2026, including 13 fatal opioid overdoses and 12 overdose deaths involving fentanyl.
—
Jt Moodee Lockman,
CBS News,
30 June 2026
Lujan Grisham's remarks came a week after AP reported that DEA agents repeatedly monitored — but did not seize — shipments of fentanyl as part of an effort to build bigger criminal cases between 2023 and 2025.
—
ABC News,
29 June 2026
See All Example Sentences for fentanyl
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Robert McGreevy,
FOXNews.com,
3 July 2026
The suit did not specify what drug was involved, but said responding officers and paramedics gave the teen who sued multiple doses of Narcan, which is used to reverse overdoses caused by opioids such as fentanyl.
—
James Queally,
Los Angeles Times,
30 June 2026
Data from the Maryland Department of Health shows there were 20 overdose deaths between June 2025 and May 2026, including 13 fatal opioid overdoses and 12 overdose deaths involving fentanyl.
—
Jt Moodee Lockman,
CBS News,
30 June 2026
Lujan Grisham's remarks came a week after AP reported that DEA agents repeatedly monitored — but did not seize — shipments of fentanyl as part of an effort to build bigger criminal cases between 2023 and 2025.
—
ABC News,
29 June 2026
See All Example Sentences for fentanyl
Cite this Entry
“Fentanyl.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fentanyl. Accessed 5 Jul. 2026.
Copy CitationMedical Definition
fentanyl
noun
fen·ta·nyl
ˈfent-ᵊn-ˌil
: a synthetic opioid narcotic analgesic C22H28N2O with pharmacological action similar to morphine that is administered transdermally as a skin patch and in the form of its citrate C22H28N2O·C6H8O7 is administered orally or parenterally
Note: Fentanyl is marketed under the trademark Actiq.
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