chthon- +

(Greek: earth, of the earth, soil, dirt)

chthonal
1. Descriptive term referring to the underworld.
2. Dwelling in or beneath the surface of the earth.
chthonian
1. Referring to, or pertaining to, the deities, spirits, and other beings dwelling under the earth.
2. Relating to the underworld.
3. Dwelling in, or beneath, the surface of the earth.
chthonic (adjective) (not comparable)
1. Relating to the geological underworld as described in Greek mythology: In the story “The Underground Palace of Pluto” the giants Typhon, Briareus, Enceladus and their brothers were buried alive under Mount Aetna, where they still try to get loose from their chthonic abode, as indicated by the earthquakes that cause the island to tremble and to vibrate.
2. A reference to dwelling in or beneath the surface of the earth: Part of the basement of Don's house had a chthonic tunnel leading into the rock caverns in the mountainside.
3. Etymology: from Greek khthonios, "in the earth"; from khthon, "the earth, solid surface of the earth" (mostly poetic).
Resembling the dark and mysterious areas below the surface of the earth.
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chthonism
1. Being in, or beneath, the earth.
2. Dwelling in, or beneath, the surface of the earth.
chthonograph
A history or written description of soils.
chthonography
The written history, or description, of soils.
chthononosology
The geography of diseases.
chthonophagia, chthonophagy
Eating earth; rarely used terms for geophagia, geophagy.
chthonous
1. Referring to the earth; of the earth.
2. Characterized by soil, or dirt.
heterochthonous
Something, or someone, originating in a geographical area other than that in which it is found.
nosochthonography
The science concerned with the influence of climatic and environmental conditions on health and disease; also known as, geomedicine.
parautochthonous
Intermediate in character between autochthonous (native to the soil, aboriginal, indigenous) and allochthonous (organic deposits and rock formations).
pelagochthonous (adjective), more pelagochthonous, most pelagochthonous
A reference to coal derived from wood that has floated on water or washed ashore, or from a sunken forest: In Clive's book, he read about pelagochthonous fragments of timber that were used for a fire.

Cross references of word families related directly, or indirectly, to: "land, ground, fields, soil, dirt, mud, clay, earth (world)": agra-; agrest-; agri-; agro-; argill-; choro-; epeiro-; geo-; glob-; lut-; myso-; pedo-; pel-; rhyp-; soil-; sord-; terr-.