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

1967

First Known Use of opioid

1967


2

opioid

noun opi·oid

Definition of opioid

  1. 1 :  any of a group of endogenous neural polypeptides (such 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

1957

First Known Use of opioid

1957


Medical Dictionary

1

opioid

adjective opi·oid \ˈō-pē-ˌȯid\

Medical 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

Medical 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. 2a:  a synthetic drug (as methadone) possessing narcotic properties similar to opiates but not derived from opiumb:  opiate 1—not used technically


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