The Collaborative International Dictionary
Geogonic
Geogonic \Ge`o*gon"ic\, Geogonical \Ge`o*gon"ic*al\, a. [Cf. F. g['e]ogonique.] Of or pertaining to geogony, or to the formation of the earth.
Wiktionary
geogonic
a. Of or relating to geogony, or to the formation of the Earth.