(1) "Cancer" means cancer that originates as a cancer of the brain, skin, digestive system, hematological system, or genitourinary system or as defined by the trust.

(2) "Covered individual" means a firefighter, part-time firefighter, or volunteer firefighter who meets the coverage requirements in section 29-5-403 (12).

(3) "Employer" means a municipality, special district, fire authority, or county improvement district that employs one or more firefighters, part-time firefighters, or volunteer firefighters. "Employer" does not include a power authority created pursuant to section 29-1-204 or a municipally owned utility.

(4) "Firefighter" means a full-time, active employee of an employer who regularly works at least one thousand six hundred hours in any calendar year and whose duties are directly involved with the provision of fire protection services, and who is not a volunteer firefighter.

(5) "Part-time firefighter" means an active employee of an employer who regularly works less than one thousand six hundred hours in any calendar year, whose duties are directly involved with the provision of fire protection services, and who is not a volunteer firefighter.

(6) "Trust" means a multiple employer health trust described in section 10-3-903.5 (7)(b)(I), established for the purposes of this part 4.

(7) "Volunteer firefighter" means a volunteer firefighter as defined in section 31-30-1102, including a person meeting this definition who provides volunteer services to a fire authority created by an intergovernmental agreement providing fire protection.