opiumlike
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opioid — /oh pee oyd /, n. Biochem, Pharm. 1. any opiumlike substance. 2. any of a group of natural substances, as the endorphins, produced by the body in increased amounts in response to stress and pain. 3. any of several synthetic compounds, as… … Universalium
opioid — o•pi•oid [[t]ˈoʊ piˌɔɪd[/t]] n. 1) pha biochem. any opiumlike substance, as the endorphins produced by the body or the synthetic compound methadone 2) phl biochem. pha pertaining to such a substance • Etymology: 1955–60 … From formal English to slang