- * * *Originally, a term denoting synthetic narcotics resembling opiates but increasingly used to refer to both opiates and synthetic narcotics.
* * *opi·oid 'ō-pē-.ȯid adj1) possessing some properties characteristic of opiate narcotics but not derived from opium2) of, involving, or induced by an opioidopioid n1) any of a group of endogenous neural polypeptides (as an endorphin or enkephalin) that bind esp. to opiate receptors and mimic some of the pharmacological properties of opiates called also opioid peptide2) a synthetic drug (as methadone) possessing narcotic properties similar to opiates but not derived from opium broadly opiate (1)
* * *opi·oid (oґpe-oid) 1. any synthetic narcotic that has opiate-like analgesic activity but is not derived from opium. 2. more broadly, any compound with opiate-like activity. Included here are the opiates; synthetic agents not derived from opium; and naturally occurring peptides that bind at or otherwise influence the opiate receptors of cell membranes, including the dynorphins, endorphins, and enkephalins.
Medical dictionary. 2011.
Look at other dictionaries:
opioid — opioíd s. n., pl. opioíde Trimis de siveco, 10.08.2004. Sursa: Dicţionar ortografic … Dicționar Român
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 — 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 — 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 … Useful 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