The following words and forms, when used in this chapter, have the following meanings, unless the context clearly indicates otherwise:
Appellant-The applicant or recipient who has requested the hearing and signed the appeal.
Hearing request-An expression, oral or written, by the client or the person acting for him, such as his legal representative, relative or friend, to the effect that he wants an opportunity to present his case to higher authority.
55 Pa. Code § 275.2