Definify.com

Webster 1913 Edition

Adj.

[Gr. [GREEK], [GREEK], the earth.]

Pertaining to the earth; earthy;

as,

chthonic

religions

[The]

chthonic

character of the wife of Zeus.

Max Müller.

chthonic ‎(not comparable)

Dwelling within or under the earth.
The young pantheon had remanded their elders to the role of smouldering, chthonic gods; to inhabiting dark, deep places, hidden from mortal eyes and influence.

dwelling within or under the earth

French: chthonien (fr)
Greek: χθόνιος (el) ‎(chthónios)
Portuguese: ctónio (Portugal), ctônio (Brazil), ctónico (pt) (Portugal), ctônico (Brazil)
Welsh: isfydol, cthonig