— Phlegethontal, Phlegethontic , adj.
/fleg"euh thon', flej"-/ , n.
1. Also called Pyriphlegethon . Class. Myth. a river of fire, one of five rivers surrounding Hades.
2. ( often l.c. ) a stream of fire or fiery light.
[ phlegéthon blazing, prp. of phlegéthein to blaze. See PHLEGM ]