[ fleg-uh-thon, flej- ]
/ ˈflɛg əˌθɒn, ˈflɛdʒ- /


Also called Pyriphlegethon. Classical Mythology. a river of fire, one of five rivers surrounding Hades.
(often lowercase) a stream of fire or fiery light.


Discover The Influence Of Portuguese On English Via This Quiz!
We’ve gathered some interesting words donated to English from Portuguese … as well as some that just don’t translate at all. Do you know what they mean?
Question 1 of 11
Which of the following bird names traces its immediate origin to Portuguese?

Origin of Phlegethon

< Latin < Greek, noun use of phlegéthōn blazing, present participle of phlegéthein to blaze. See phlegm


Phleg·e·thon·tal, Phleg·e·thon·tic, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for phlegethon

British Dictionary definitions for phlegethon

/ (ˈflɛɡɪˌθɒn) /


Greek myth a river of fire in Hades

Word Origin for Phlegethon

C14: from Greek, literally: blazing, from phlegethein to flame, blaze
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012