单词 | opiate |
释义 | opiate1 of 2noun opi·ate ˈō-pē-ət -ˌāt plural opiates 1 a : an alkaloid drug (such as morphine or codeine) that contains or is derived from opium, binds to cell receptors primarily of the central nervous system and gastrointestinal tract, acts to block pain, induce sedation or sleep, depress respiration, and produce calmness or euphoria, and is associated with physiological tolerance (see tolerance sense 4a(1)), physical and psychological dependence, and addiction upon repeated or prolonged use b : a synthetic or semisynthetic drug (such as fentanyl or methadone) or an endogenous substance (such as beta-endorphin) that binds to opiate cell receptors and produces physiological effects like those of opium derivatives: opioid sense 1 … fentanyl, a synthetic opiate that is 90-100 times more potent than morphine. The Economist Current peptide research has uncovered at least two groups of endogenous opiates in the CNS that modulate the perception of pain. Nicholas T. Zervas Note: The use of opiate for substances that bind to opiate receptors but are not opium derivatives is often considered technically incorrect. Such substances are more commonly referred to as opioids. The word opioid itself was originally used only for these substances, but it has now become widely accepted as a broader term encompassing any substance—natural, synthetic, opium-derived or not—that binds to opiate receptors and has morphine-like activity. 2 : something likened to a drug that induces rest or inaction or quiets uneasiness Operatic music is an opiate that lowers our critical guard and allows us to entertain views that our good liberal selves would disavow were they presented in naked prose. Paul Robinson … the novel's real drug is the opiate of nostalgia. Richard, narrating the events at a distance of ten years, is still too in love with the friends to look at them with an even faintly critical eye. Ruth Franklin opiate 2 of 2adjective1 a : containing or mixed with opium b : of, relating to, binding, or being an opiate opiate receptors 2 a : inducing sleep : narcotic b : causing dullness or inaction opiate 1 of 2 adjectiveas in hypnotic tending to cause sleep morphine is an opiate drug Synonyms & Similar Words Relevance
Antonyms & Near Antonyms
opiate 2 of 2nounas in narcotic something that soothes, calms, or induces passivity or a sense of security a cultural critic who argues that the Internet has now joined television as an opiate of the American people Synonyms & Similar Words
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