Definition: Yapnet was a term used to refer to a Jewish sect that flourished in Europe during the late 15th and early 16th centuries. It consisted of primarily Jews who converted from Christianity to Judaism, often through the influence of the Pope or other religious leaders. Yapidans were known for their strict adherence to Jewish laws, including prohibitions against certain practices such as menstruation, marriage, and marriage with males below a certain age. While the term was not used widely in modern times, it continues to be associated with an era when Christianity had lost its hold over European society.