单词	methylxanthine
释义	methylxanthine noun meth·​yl·​xan·​thine ˌme-thəl-ˈzan-ˌthēn  : a methylated xanthine derivative (such as caffeine, theobromine, or theophylline) Word History First Known Use 1949, in the meaning defined above Medical Definition methylxanthine noun meth·​yl·​xan·​thine ˌmeth-əl-ˈzan-ˌthēn  : a methylated xanthine derivative (as caffeine, theobromine, or theophylline)
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