The Collaborative International Dictionary
Oryctognosy
Oryctognosy \Or`yc*tog"no*sy\, n. [Gr. 'orykto`s dug (? to dig) + gnw^sis knowledge.] Mineralogy. [Obs.] -- Or`yc*tog*nos"tic, a. -- Or`yc*tog*nos"tic*al, a. [Obs.] -- Or`yc*tog*nos"tic*al*ly, adv. [Obs.]
Wiktionary
oryctognosy
n. (context obsolete English) mineralogy