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1. relieving pain.
2. pertaining to analgesia.
3. an agent that relieves pain without causing loss of consciousness.
narcotic analgesic opioid analgesic.
nonsteroidal antiinflammatory analgesic (NSAIA) nonsteroidal antiinflammatory drug.
opiate analgesic (opioid analgesic) any of a class of compounds that bind with a number of closely related specific receptors (opioid receptors) in the central nervous system to block the perception of pain or affect the emotional response to pain; such compounds include opium and its derivatives, as well as a number of synthetic compounds, and are used for moderate to severe pain. Chronic administration or abuse may lead to dependence.
1. Any drug derived from opium or opiumlike compounds with potent analgesic effects associated with both significant alteration of mood and behavior and potential for dependence and tolerance.
2. Any drug, synthetic or naturally occurring, with effects similar to those of opium and opium derivatives.
3. Capable of inducing a state of stuporous analgesia.
[G. narkōtikos, a benumbing]