do·deca·phon·ic \(|)dō|dekə|fänik\adjective Etymology:dodeca- + phon- + -ic 1.of musical composition: composed by using as a device the mechanical application of a particular numerical arrangement of the successive notes of the chromatic scale 2.: of, relating to, or involved in the composition of dodecaphonic music < a dodecaphonic technique > < the dodecaphonic tradition — Howard Taubman >