Cacodylic \Cac`o*dyl"ic\, a. (Chem.) Of, pertaining to, or derived from, cacodyl. [1913 Webster] {Cacodylic acid}, a white, crystalline, deliquescent substance, {(CH3)2AsO.OH}, obtained by the oxidation of cacodyl, and having the properties of an exceedingly stable acid; -- also called {alkargen}. [1913 Webster]