Baptistery

Baptistery ({not transcribed}) , noun

[Latin baptisterium, Greek baptisth`rion: compare French baptistère.]

(a)

(Architecture) In early times, a separate building, usually polygonal, used for baptismal services. Small churches were often changed into baptisteries when larger churches were built near.

(b)

(Architecture) A part of a church containing a font and used for baptismal services.

Also: Baptistry