Ariz. Admin. Code § 12-5-2301
Unless the context requires otherwise, in this Article:
1. "Appellant" means the person that files a notice of appeal with the Clerk under A.R.S. § 37-215.
2. "Board" means the Land Department Board of Appeals appointed by the Governor under A.R.S. § 37-213(A).
3. "Chairperson" means the Chairperson or, in the Chairperson's absence or by designation, the Vice-chairperson of the Board.
4. "Clerk" means the person designated by the Board to handle administrative matters for the Board.
5. "Commissioner" means the State Land Commissioner appointed under A.R.S. § 37-131, or the Commissioner's designee.
6. "Department" means the State Land Department.
7. "Good cause" means a reason that the Board determines is substantial enough to afford a legal excuse.
8. "Party" has the same meaning as prescribed in A.R.S. § 41-1001.
9. "Person" means an individual, limited liability company, corporation, association, partnership, receiver, trustee, guardian, executor, administrator, fiduciary representative, group acting as a unit, and any department, agency, or instrumentality of the state or a political subdivision.
Ariz. Admin. Code § R12-5-2301