Having a charter. / (specifically) Having membership of the relevant professional body and the necessary qualifications to carry on a particular profession.

simple past tense and past participle of charter

A document issued by some authority, creating a public or private institution, and defining its purposes and privileges.

Leased or hired.

(transitive) To grant or establish a charter. / (transitive) To lease or hire something by charter.

plural of charter

A person who charters something

plural of charterer

present participle of charter

Capable of being chartered.