(29) "Prior service" means service rendered prior to January 1, 1954, for which credit is allowable under this chapter.

(20) "Prior service" means service rendered prior to January 1, 1945, for which credit is allowable under Code Sections 4738347-3-83, 4738647-3-86, and 4738747-3-87.

(18) "Prior service" means service which is rendered as a public school employee prior to the commencement date and for which credit is allowable.

"Prior service" means service rendered prior to January 1, 1954, as a Representative, Senator, or staff member of the General Assembly and service, day for day, on active duty in any component of the armed forces of the United States during wartime or during any [...]