noun. 1. with regard to medical genetics, a pictorial symbolization of the history of a disease in a family. It describes the union of family members and, for each member, present status, the date the diagnosis was rendered, type of relevant disease, and age at the time of diagnosis. 2. ancestry or family lineage, particularly whenever this is considered to be differentiated or worth noting. 3. the line of descent of a pure-bred animal, or a documentation of this descent.
PEDIGREE: "I am only looking for dogs with a certain pedigree."