Wordnet 3.0
NOUN (2)
1.
the beliefs and practices characteristic of Puritans (most of whom were Calvinists who wished to purify the Church of England of its Catholic aspects);
2.
strictness and austerity in conduct and religion;
The Collaborative International Dictionary of English v.0.48:
Puritanism \Pu"ri*tan*ism\, n.
The doctrines, notions, or practice of Puritans.
[1913 Webster]
WordNet (r) 3.0 (2006):
Puritanism
n 1: the beliefs and practices characteristic of Puritans (most
of whom were Calvinists who wished to purify the Church of
England of its Catholic aspects)
2: strictness and austerity in conduct and religion