Definition of "pietism"

pietism

/ˈpʌɪətɪz(ə)m/

noun
countable and uncountable, plural pietisms
1. (Christianity, often capitalized) A movement in the Lutheran church in the 17th and 18th centuries, calling for a return to practical and devout Christianity.
  Quotations
  From its earliest days, Pietism was intimately bound up with education.
  2009, Diarmaid MacCulloch, A History of Christianity, Penguin, published 2010, page 739