hecatomb

The story

1. Ancient Greek · derived fromἑκατόμβη“great sacrifice of a hundred oxen, hecatomb; any animal sacrifice or large sacrifice”
2. Latin · learned borrowing fromhecatombē“great sacrifice of a hundred oxen, hecatomb”
3. English todayhecatomb

The noun is a learned borrowing from Latin hecatombē (“great sacrifice of a hundred oxen, hecatomb”), from Ancient Greek ἑκατόμβη (hekatómbē, “great sacrifice of a hundred oxen, hecatomb; any animal sacrifice or large sacrifice”, from ἑκᾰτόν (hekătón, “hundred”) + βοῦς (boûs, “cattle, cow, ox”)). The verb is derived from the noun.