Ŏr'/yĕ-tŏl'o-gy, n.

n. [Fr. oryctologie, from Gr. ὀρυκτός, dug, fossil, and λόγος, discourse.] 1. That part of natural history which treats of fossils. 2. The science which treats of the arrangement, classification, and description of minerals; oryctognosy.