opioid

I. \\ˈōpēˌȯid\ adjective
Etymology: opiate (II) + -oid
1. : possessing some properties characteristic of opiate narcotics but not derived from opium
2. : of, involving, or induced by an opioid
II. noun (-s)
1. or opioid peptide : any of a group of endogenous neural polypeptides (as an endorphin or enkephalin) that bind especially to opiate receptors and mimic some of the pharmacological properties of opiates
2. : a synthetic drug that possesses narcotic properties similar to opiates but is not derived from opium ; broadly : opiate 1

Useful english dictionary. 2012.

Look at other dictionaries:

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  • opioid — 1957, from OPIUM (Cf. opium) + OID (Cf. oid) …   Etymology dictionary

  • opioid — [ō′pē oid΄] adj. designating or of a group of natural or synthetic biochemicals, esp. endorphins, that relieve pain in the same way that opiates do n. any such biochemical …   English World dictionary

  • Opioid — Endogenous opioid peptides Skeletal molecular images Adrenorphin Amidorphin Casomorphin …   Wikipedia

  • Opioid — Schlafmohn, Papaver somniferum, aus dessen Milch Opioide gewonnen werden Opioid (von gr. ὄπιον [ˈɔpiɔn] und …   Deutsch Wikipedia

  • Opioid — 1. A synthetic narcotic that resembles the naturally occurring opiates. 2. Any substance that binds to or otherwise affects the opiate receptors on the surface of the cell. * * * Originally, a term denoting synthetic narcotics resembling opiates… …   Medical dictionary

  • opioid — I. adjective Date: 1967 1. possessing some properties characteristic of opiate narcotics but not derived from opium 2. of, involving, or induced by an opioid II. noun Date: 1967 1. any of a group of endogenous neural polypeptides (as an endorphin …   New Collegiate Dictionary

  • opioid — /ˈoʊpiɔɪd/ (say ohpeeoyd) noun 1. an endogenous peptide with pain relieving properties similar to morphine. 2. → opiate (def. 2). –adjective 3. of or relating to such a substance: opioid receptor; opioid analgesic …   Australian English dictionary

  • opioid — n. any substance similar to opium; natural substance produced in the body in response to stress or pain; synthetic drug with effects similar to those of opium adj. having characteristics similar to that of opium; caused by an opioid peptide,… …   English contemporary dictionary

  • 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

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