Opioid Definition
ōpē-oid
opioids
adjective
Opiate.
American Heritage
Designating or of a group of natural or synthetic biochemicals, esp. endorphins, that relieve pain in the same way that opiates do.
Webster's New World
noun
Any such biochemical.
Webster's New World
A substance that is like opium.
Wiktionary
Any of various compounds that bind to specific receptors in the central nervous system and have analgesic and narcotic effects, including naturally occurring substances such as morphine; synthetic and semisynthetic drugs such as methadone and oxycodone; and certain peptides produced by the body, such as endorphins.
American Heritage Medicine
(pharmacology) Any of a group of synthetic compounds that exhibit similarities to the opium alkaloids that occur in nature.
Wiktionary
Other Word Forms of Opioid
Noun
Singular:
opioid
Plural:
opioidsOrigin of Opioid
-
From opium +"Ž -oid.
From Wiktionary
opi(um) –oid
From American Heritage Dictionary of the English Language, 5th Edition
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