As used in this chapter, unless the context otherwise requires:
1. “Board” means the board of supervisors of a county.
2. “Book”, “list”, “record”, or “schedule” kept by a county auditor, assessor, treasurer, recorder, sheriff, or other county officer means the county system as defined in section 445.1.
3. “District” means a benefited emergency medical services district.
4. “Trustee” means a trustee of a district.
92 Acts, ch 1226, §2; 2000 Acts, ch 1148, §1; 2002 Acts, ch 1119, §200, 201