D defs.my
Entry 2 senses Webster, 1913

Pietism

/(pī"ē̇*tĭz'm)/ · Pi·e·tism · IPA /ˈpʌɪətɪz(ə)m/
01 n. The principle or practice of the Pietists.
  1. 1.
    The principle or practice of the Pietists.
  2. 2.
    Strict devotion; also, affectation of devotion.
    “The Schöne Seele, that ideal of gentle pietism, in “Wilhelm Meister.”” — W. Pater.