dɪˈkeɪ di.ˈkeɪ ˌdiːkəmˈpəʊz dɪsˈɪntɪɡɹeɪt ɹɒt ɹɔt

separate (substances) into constituent elements or parts break down The bodies decomposed in the heat lose a stored charge, magnetic flux, or current the particles disintegrated during the nuclear fission process