As used in this article, the following words and phrases shall have the following meanings respectively, unless the context clearly indicates otherwise:
(1) UNIT. Any public corporation organized in this state pursuant to authorization or determination by any municipality or municipalities or county or counties or a municipality and a county or by any combination of municipalities and counties or by the governing body of any one or more thereof and shall include also any county board of education and any city board of education.
(2) ORGANIZING SUBDIVISION. With respect to any unit, each municipality or county which may have granted authorization or made determinations respecting the incorporation of the unit or the governing body of which may have granted such authorization or made such determinations and, in the case of a board of education, the county or city with respect to which such board of education is organized.
(3) OBLIGATIONS. Bonds, warrants, certificates of indebtedness and notes of a unit, including bonds, warrants, certificates and notes that are general obligations of the issuing unit and those that are payable solely from a specified source.
(4) DISTRICT ATTORNEY. The district attorney of the judicial circuit in which the county is located.