Lithology
Pronunciation : Li*thol"o*gy
Part of Speech : n.
Etymology : [Litho- + -logy: cf. F. lithologie.]
Definition : 1. The science which treats of rocks, as regards their mineral constitution and classification, and their mode of occurrence in nature.
2. (Med.)
Defn: A treatise on stones found in the body.
Source : Webster's Unabridged Dictionary, 1913