holocauste

holocauste is masculine in French.

holocaust

Inherited from Middle French holocauste, from Old French olocauste, learned borrowing from Late Latin holocaustum, from the neuter form of Ancient Greek ὁλόκαυστος (holókaustos), from ὅλος (hólos, “whole”) + καυστός (kaustós, “burnt”), from καίω (kaíō, “to burn”).