polysubstance
noun
poly·sub·stance
-ˈsəb-stən(t)s 
often attributive
: a group of substances used often indiscriminately by a substance abuser
has a polysubstance dependence problem
Cite this Entry
“Polysubstance.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/polysubstance. Accessed 23 May. 2025.
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