211-2 Wyo. Code R. § 2-4
For the purposes of contested cases brought before the Board under these rules, the following definitions shall apply:
(a) "Board" - the Wyoming State Board of Equalization as set forth in W.S. 39-11-102.1.
(b) "Case" - a proceeding before the Board in which the legal rights, duties or privileges of a party are to be determined by the Board after an opportunity for hearing as provided by W.S. W.S. 16-3-107.
(c) "Certified Case" - a case proceeding before the Board pursuant to Section 36 of this Chapter.
(d) "Department" - the Wyoming Department of Revenue as created by W.S. W.S. 39-11-102.
(e) "Party" - the Petitioner who is seeking relief before the Board, each person or agency named or admitted as a party or properly seeking and entitled as of right to be admitted as a party, including a board of county commissioners, and the Department.
(f) "Petitioner" - Any person, firm, corporation, partnership, association, or board of county commissioners who files a case notice.
211-2 Wyo. Code R. § 2-4