In this chapter, the following terms have the meanings indicated. Terms Defined. “Department” means the Maryland Department of Health. “Petition” means a petition to promulgate, amend, or repeal a regulation. “Petitioner” means an interested person filing a petition to the Department to promulgate, amend, or repeal a regulation. “Regulation” has the meaning stated in State Government Article, §10-101, Annotated Code of Maryland. “Secretary” means the Secretary of Health.