rantistirion

The story

1. Proto-Indo-European · derived from*weri
2. Medieval Greek · borrowed fromῥαντιστήριον
3. English todayrantistirion

Borrowed from Medieval Greek ῥαντιστήριον (rhantistḗrion), from ῥαντίζω (rhantízō) (a late form of ῥαίνω (rhaínō, “to sprinkle, purify”), from Proto-Indo-European *weri) + -ῐον (-ĭon, “suffix forming diminutive nouns”).