Phlegethon [fleg-uh-thon, flej-]
1. Also called Pyriphlegethon. Classical Mythology. a river of fire, one of five rivers surrounding Hades.
2. (often lowercase) a stream of fire or fiery light.
Origin: < Latin < Greek, noun use of phlegéthōn blazing, present participle of phlegéthein to blaze. See phlegm
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