chthonian

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chthon·ic

C0343200 (thŏn′ĭk) also chtho·ni·an (thō′nē-ən)adj. Greek Mythology Of or relating to the underworld.

[From Greek khthonios, of the earth, from khthōn, earth; see dhghem- in Indo-European roots.]

(ˈθəʊnɪən) or

adj (Classical Myth & Legend) of or relating to the underworld[C19: from Greek khthonios in or under the earth, from khthōn earth]

having to do with the underworld.See also: Earth

Thesaurus

Adj.

chthonian - dwelling beneath the surface of the earth; "nether regions"chthonic, netherinfernal - being of the underworld; "infernal regions"