baptistry
nounEtymology From Middle English baptistery, baptisterie, from Ecclesiastical Latin baptistērium, from Ancient Greek βαπτιστήριον (baptistḗrion); equivalent to baptism + -ry.
1
Christianity A designated space within a church, or a separate room or building associated with a church, where a baptismal font is located, and consequently, where the sacrament of Christian baptism (via aspersion or affusion) is performed.
2
An indoor pool used for baptism by immersion.