[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 of Phlegethon

< Latin < Greek, noun use of phlegéthōn blazing, present participle of phlegéthein to blaze. See phlegm
Related formsPhleg·e·thon·tal, Phleg·e·thon·tic, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for phlegethon

Historical Examples of phlegethon

British Dictionary definitions for phlegethon


  1. Greek myth a river of fire in Hades

Word Origin for Phlegethon

C14: from Greek, literally: blazing, from phlegethein to flame, blaze
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