Definition of "dissociate"

(transitive) To make unrelated; to sever a connection; to separate.  examples

(intransitive) To part; to stop associating.  examples

(chemistry, transitive) To separate compounds into simpler component parts, usually by applying heat or through electrolysis.  examples

(chemistry, intransitive) To undergo dissociation.  examples

(psychology, intransitive) To undergo dissociation.