βαπτιστήρ

From LSJ

ὡς μήτε τὰ γενόμενα ἐξ ἀνθρώπων τῷ χρόνῳ ἐξίτηλα γένηται → in order that so the memory of the past may not be blotted out from among men by time

Source

Spanish (DGE)

-ῆρος, ὁ baptisterio Pall.V.Chrys.14 p.83.