geology Meaning, Definition & Usage

  1. noun a science that deals with the history of the earth as recorded in rocks

WordNet

Ge*ol"o*gy noun
Etymology
Gr. , , the earth + -logy: cf. F. géologie.
Wordforms
plural Geologies
Definitions
  1. The science which treats: (a) Of the structure and mineral constitution of the globe; structural geology. (b) Of its history as regards rocks, minerals, rivers, valleys, mountains, climates, life, etc.; historical geology. (c) Of the causes and methods by which its structure, features, changes, and conditions have been produced; dynamical geology. See Chart of The Geological Series.
  2. A treatise on the science.

Webster 1913