anabaptism
noun
ana·bap·tism ˌa-nə-ˈbap-ˌti-zəm 
1
capitalized
a
: the doctrine or practices of the Anabaptists
b
: the Anabaptist movement
2
: the baptism of one previously baptized
Word History
Etymology
New Latin anabaptismus, from Late Greek anabaptismos rebaptism, from anabaptizein to rebaptize, from Greek ana- again + baptizein to baptize
First Known Use
1560, in the meaning defined at sense 1a