Terms as used in this chapter, unless the context otherwise requires, mean:
(1) "Agency," a principal functional and administrative entity, including each department and bureau of state government, as designated in the general appropriation bill;
(2) "Budget unit," a unit of government contained within an agency, including each institution, for which separate appropriations in the general appropriation bill are made;
(3) "General appropriation bill," the bill enacted by the Legislature in accordance with the provisions of S.D. Const., Art. XII, § 2, requiring a majority vote of all the members of each house of the Legislature;
(4) "General contingency funds," appropriated funds for expenditures arising from or subject to unforeseen conditions of an agency's operations for which a general fund appropriation has not been provided and which are deemed by the Governor and the special committee to be in the interest of the state and its agencies; and
(5) "Special committee," the committee created by § 4-8A-2.