['θәuniәn]
adj.
[希神](亡灵、神等)阴间的,冥府的

[ adj ]
dwelling beneath the surface of the earth
<adj.all>
nether regions

Chthonian \Chtho"ni*an\, a. [Gr. ? in or under the earth, fr. ?,
?, earth.]
Designating, or pertaining to, gods or spirits of the
underworld; esp., relating to the underworld gods of the
Greeks, whose worship is widely considered as more primitive
in form than that of the Olympian gods. The characteristics
of chthonian worship are propitiatory and magical rites and
generalized or euphemistic names of the deities, which are
supposed to have been primarily ghosts.

Syn: chthonic, lower, nether.
[Webster 1913 Suppl.]