### Question
What is the definition of opioid?


### Answer
The definition of **opioid** is as follows in *42 U.S.C. § 3797ff*:

> any drug, including heroin, having an addiction-forming or addiction-sustaining liability similar to morphine or being capable of conversion into a drug having such addiction-forming or addiction-sustaining liability

#### Citation:
  - *42 U.S.C. § 3797ff*
  - Heading: **CHAPTER 46-JUSTICE SYSTEM IMPROVEMENT > SUBCHAPTER XXII&ndash;COMPREHENSIVE OPIOID ABUSE GRANT PROGRAM**

