Definition of oryctognosy in US English:

oryctognosy

noun

rare, historical
  • The science or study of minerals; mineralogy.

Origin

Early 19th century. From orycto- + -gnosy, after German Oryktognosie (A. G. Werner, 1779 or earlier). Compare scientific Latin oryctognosia, French oryctognosie.

Pronunciation

oryctognosy

/ˌɒrɪkˈtɒɡnəsi/