Main Entry: meth·a·done

Pronunciation: \ˈme-thə-ˌdōn\

Variant(s): also meth·a·don \-ˌdän\

Function: noun

Etymology: methyl + amino + diphenyl + -one

Date: 1947

: a synthetic addictive narcotic drug C₂₁H₂₇NO used especially in the form of its hydrochloride for the relief of pain and as a substitute narcotic in the treatment of heroin addiction