adj. 1. brought about or set up or accepted; especially long and widely accepted; as, distrust of established authority; a team established as a member of a major league; enjoyed his prestige as an established writer; an established precedent; the established Church. Contrasted with unestablished. [ Narrower terms: entrenched; implanted, planted, rooted; official; recognized ] [ WordNet 1.5 ]
2. securely established; as, an established reputation.
Syn. -- firm. [ WordNet 1.5 ]
3. settled securely and unconditionally.
Syn. -- accomplished, effected. [ WordNet 1.5 ]
4. conforming with accepted standards. [ WordNet 1.5 ]
5. shown to be valid beyond a reasonable doubt; as, the established facts in the case.
Syn. -- proved. [ WordNet 1.5 +PJC ]
6. (Bot.) introduced from another region and persisting without cultivation; -- of plants.
Syn. -- naturalized. [ WordNet 1.5 +PJC ]