morphine

n. narcotic substance extracted from opium, type of pain relieving medication, type of addictive sedative drug (Pharmacology)

Morphine (INN) (IPA: ) is a highly potent opiate analgesic drug and is the principal active agent in opium and the prototypical opioid. Like other opiates, e.g. diacetylmorphine (heroin), morphine acts directly on the central nervous system (CNS) to relieve pain, and at synapses of the nucleus accumbens in particular. Studies done on the efficacy of various opioids have indicated that, in the management of severe pain, no other narcotic analgesic is more effective or superior to morphine. Morphine is highly addictive when compared to other substances; tolerance, physical and psychological dependences develop very rapidly.
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Morphine /mor·phine/ an opioid analgesic, the principal and most active alkaloid of opium ; used as the sulfate or hydrochloride salt as an [more]Morphine - Community and Resources

Noun
1. an alkaloid narcotic drug extracted from opium; a powerful, habit-forming narcotic used to relieve pain
(synonym) morphia
(hypernym) opiate
(hyponym) apomorphine

n. morphine, narcotic substance extracted from opium, type of pain relieving medication, type of addictive sedative drug (Pharmacology)