Definition of oryctology in English:

oryctology

Pronunciation /ˌɒrɪkˈtɒlədʒi/

noun

historical, rare
  • The branch of science concerned with rocks, minerals, and fossils dug out of the earth.

Origin

Mid 18th century; earliest use found in Chambers's Cyclopaedia. From orycto- + -logy.