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1

opioid

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adjective opi·oid \ˈō-pē-ˌȯid\

Definition of opioid

  1. 1 :  possessing some properties characteristic of opiate narcotics but not derived from opium

  2. 2 :  of, involving, or induced by an opioid




2

opioid

noun opi·oid

Definition of opioid

  1. 1 :  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 —called also opioid peptide

  2. 2 :  a synthetic drug possessing narcotic properties similar to opiates but not derived from opium; broadly :  opiate 1a



1967

First Known Use of opioid

1967


Learn More about opioid

  1. Medical Dictionary: Definition of "opioid" Britannica.com: Encyclopedia article about "opioid"


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