controlled substance

noun

Definition of controlled substance

: a drug that requires permission from a doctor to use

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“Controlled substance.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/controlled%20substance. Accessed 18 Sep. 2020.

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controlled substance

noun
controlled sub·​stance

Legal Definition of controlled substance

: a substance (as a drug) whose use and possession is regulated by law (as title 21, chapter 13 of the U.S. Code)

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