Definition of Piarist in English:

Piarist

Pronunciation /ˈpʌɪərɪst/

noun

Roman Catholic Church
  • A member of the Order of the Pious Schools, a religious order devoted to providing free education for children.

    The order was founded in Rome in the early 17th century by St Joseph Calasanctius (1556–1648).

Origin

Late 18th century. From German Piarist from post-classical Latin piar- + German -ist.