metopon
noun
met·o·pon
ˈmet-ə-ˌpän 
: a narcotic drug that is derived from morphine and is used in the form of its hydrochloride C18H21NO3·HCl to relieve pain
called also methyldihydromorphinone
Cite this Entry
“Metopon.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/metopon. Accessed 31 Jul. 2025.
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