As used in this part, unless the context otherwise requires:
(1) “Advisory board” means the state advisory board for the rehabilitation centers;
(2) “Commissioner” means the commissioner of human services;
(3) “Department” means the department of human services;
(4) “Director” means director of the vocational rehabilitation program;
(5) “Division” means the division of rehabilitation services; and
(6) “Rehabilitation center” or “center” means a rehabilitation center authorized under this part.