of Aquapendente, Hieronymus. ?1533,1537-1619 Studied under Fallopius; Padua anatomist; taught William Harvey; described valves in veins; bursa of F. = peritoneal blind pouch near anus in birds, producing lymphocytes.

Fabricus is a lunar impact crater that is located within the northeast part of the Janssen walled plain. Attached to the north-northwest rim is the slightly larger Metius crater. The crater has multiple central peaks that rise to 0.8 km, with a rugged rise to the northwest running north-south.