The following words and phrases when used in this act shall have the meanings given to them in this section unless the context clearly indicates otherwise:
"Department." The Department of Health of the Commonwealth.
"DES." The chemical diethylstilbestrol.
"Exposed person." A person who either took diethylstilbestrol (DES) while pregnant or one who was exposed prenatally or the offspring of a person who was exposed prenatally.
"Prenatal." In a stage of biological development which follows conception but precedes birth; in utero.
35 P.S. § 6212