[ dɪˌsəʊʃɪ'eɪʃ(ə)n , -sɪ- ]
■ noun
1》 the action or process of disconnecting or separating.
2》 Psychiatry separation of normally related mental processes, resulting in one group functioning independently from the rest and leading to disorders such as multiple personality.
3》 Chemistry the splitting of a molecule into smaller molecules, atoms, or ions, especially by a reversible process.