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opioid Syllabification: o·pi·oid
Pronunciation: /ˈōpēˌoid/

Definition of opioid in English:


An opiumlike compound that binds to one or more of the three opioid receptors of the body.
Example sentences
  • Some of the most addictive pain medications are opioids, a family of drugs that have effects similar to those of opium or morphine.
  • Some opioids are natural compounds derived from opium, others are synthetic medications that work in a similar way.
  • Historical evidence suggests that law enforcement has been useful in the control of alcohol, tobacco, amphetamine, and opioids.


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Relating to opioid compounds.
Example sentences
  • For example, the propensity of opioid abusers entering opioid agonist treatment to discount their cocaine use has been previously documented.
  • The medications most often implicated in prescription drug abuse are opioid analgesics, sedative-hypnotics and stimulants.
  • Fentanyl, morphine, and hydromorphone are opioid analgesic medications that may be used for moderate sedation/analgesia.


1950s: from opium + -oid.

Definition of opioid in:
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