established

verb

1. (form-of, participle, past)simple past and past participle of establish

adj

1. Having been in existence for a long time and therefore recognized and generally accepted.
2. Of a religion, church etc.: formally recognized by a state as being official within that area.

   “Anglicanism did manage to strengthen its position in the southern English American colonies after Charles II's restoration (even in cosmopolitan New York), gaining established status in six out of the eventual thirteen.”

3. Of any social or economic entity: part of the establishment (“groups with socioeconomic power”).
4. Explicitly defined, described or recognized as a reference.