morphine

noun

mor·​phine ˈmȯr-ˌfēn 

: a bitter crystalline addictive narcotic base C₁₇H₁₉NO₃ that is the principal alkaloid of opium and is used in the form of a soluble salt (such as a hydrochloride or a sulfate) as an analgesic and sedative

Examples of morphine in a Sentence

Recent Examples on the Web

Keeping up with inflation Pfizer announced the most list price hikes, on around 80 different drugs including cancer drug Ibrance, migraine pill Nurtec, and COVID treatment Paxlovid, as well as some administered in hospitals such as morphine and hydromorphone. —Reuters 12 Hr Ago, CNN Money, 1 Jan. 2026

The Weld County Coroner's report revealed Peterson died of an accidental morphine overdose. —Gillian Telling, PEOPLE, 27 Dec. 2025

For the first week, no amount of morphine could dull the pain. —David Freyne, Time, 7 Dec. 2025

During the sale, Horvath gave agents a tour of his business, Overseas Organics, which allegedly produces a substance that is 13 times more potent than morphine. —Alexandra Koch, FOXNews.com, 4 Dec. 2025

Word History

Etymology

French, from Morpheus

First Known Use

1817, in the meaning defined above

Kids Definition

morphine

noun

mor·​phine ˈmȯr-ˌfēn 

: a bitter white habit-forming narcotic drug made from opium and used especially to deaden pain

Etymology

derived from Morpheus "Greek god of dreams"

Medical Definition

morphine

noun

mor·​phine ˈmȯr-ˌfēn 

: a bitter crystalline addictive narcotic base C₁₇H₁₉NO₃ that is the principal alkaloid of opium and is used in the form of its hydrated sulfate (C₁₇H₁₉NO₃)₂·H₂SO₄·5H₂O or hydrated hydrochloride C₁₇H₁₉NO₃·HCl·3H₂O as an analgesic and sedative