WordReference Random House Unabridged Dictionary of American English © 2025
controlled′ sub′stance, 
  1. Drugsany of a category of behavior-altering or addictive drugs, as heroin or cocaine, whose possession and use are restricted by law.
  • 1970–75

'controlled substance' also found in these entries (note: many are not synonyms or translations):
substance

Forum discussions with the word(s) "controlled substance" in the title:


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