As used in this chapter, unless the context otherwise requires:
1. "Board of health" means a district, county, city, or tribal board of health.
2. "Department" means the department of health and human services.
3. "Governing body" means, as applicable, a city commission, city council, board of county commissioners, joint board of county commissioners, or tribal council.
4. "Health district" means an entity formed under section 23-35-04 or 23-35-05.
5. "Joint board of county commissioners" means the boards of county commissioners of two or more counties acting together in joint session.
6. "Local health officer" means the health officer of a public health unit.
7. "Public health department" means a city, county, or tribal health department formed under this chapter.
8. "Public health unit" means the local organization formed under this chapter to provide public health services in a city, county, or designated multicounty or city-county area, or Indian reservation. The term includes a city public health department, county public health department, tribal health department, and a health district.