D defs.my
Entry 2 senses Webster, 1913

Lithology

· Li·thol·o·gy · IPA
01 n. The science which treats of rocks, as regards their mineral constitution and classification, and their mode of occurrence in nature.
  1. 1.
    The science which treats of rocks, as regards their mineral constitution and classification, and their mode of occurrence in nature.
  2. 2.
    A treatise on stones found in the body.(Med.)