From Longman Dictionary of Contemporary Englishdisestablishdis‧es‧tab‧lish /ˌdɪsəˈstæblɪʃ/ AWL verb [transitive] formal RRCto officially decide that a particular church is no longer the official church of your country→ See Verb table
Examples from the Corpus
disestablish• This was a new world, where religion was disestablished. 