cacodylPronunciation: /ˈkakə(ʊ)dʌɪl, -dɪl/Definition of cacodyl noun [mass noun] Chemistry a malodorous, toxic, spontaneously flammable liquid compound containing arsenic. Chemical formula: ((CH3)2As)2 [as modifier] of or denoting the radical As(CH3)2, derived from cacodyl. Origin: mid 19th century: from Greek kakōdēs 'stinking' (from kakos 'bad') + -ylcacodyl in other Oxford dictionaries Definition of cacodyl in the US English dictionary
