Definition of Port-Royal in US English:

Port-Royal

noun

  • The community of Port-Royal as a centre of Jansenism; (hence) the doctrines of the Jansenists. Also: the wider community following the principles and methods of Port-Royal in education or philosophy; a comparable institution elsewhere.

Origin

Mid 17th century. From Port-Royal, the name of a convent near Versailles, which, in the 17th cent., housed a lay community which became well-known for its strong Jansenist leanings and its work in education and philosophy.