The Collaborative International Dictionary
Geognostic
Geognostic \Ge`og*nos"tic\, Geognostical \Ge`og*nos"tic*al\, a. Of or pertaining to geognosy, or to a knowledge of the structure of the earth; geological. [R.]
Wiktionary
geognostic
a. (context now chiefly historical English) Pertaining to geognosy; geological. (from 18th c.)
Usage examples of "geognostic".
There is, indeed, one piece of evidence for the probability of the comparative youth of our system, altogether apart from human traditions and the geognostic appearances of the surface of our planet.