Mental Health & Substance Use

Opioid

What does Opioid mean?

A class of medicines and drugs acting on opioid receptors, including morphine, oxycodone, fentanyl and heroin.

U.S. National Library of Medicine
Understanding Medical Words ↗ National Cancer Institute
Cancer Terms Dictionary ↗ CDC
Vaccine Glossary ↗

This is a plain-language Healthway explanation, not an individual diagnosis. The meaning of a term can change with the clinical context in which it appears.