Immolator

·noun One who offers in sacrifice; specifically, one of a sect of Russian fanatics who practice self-mutilatio and sacrifice.

immolator
immŏlātor (inm-), ōris, m. [immolo], one who offers a sacrifice , a sacrificer (rare but class.)...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
immolator
immolātor (in-m-) ōris, m immolo, a sacrificer : immolatoris fortuna. ...

An Elementary Latin Dictionary