Phlegĕthon
（Φλεγέθων), “the flaming,” and Pyriphlĕgthon (Πυριφλεγέθων), “flaming with fire.” A river in the lower world, in whose channel flowed flames instead of water. See Hades.
Harry Thurston Peck. Harpers Dictionary of Classical Antiquities. New York. Harper and Brothers. 1898.
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