from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The scientific study of the origin, history, and structure of the earth.
- n. The structure of a specific region of the earth's crust.
- n. A book on geology.
- n. The scientific study of the origin, history, and structure of the solid matter of a celestial body.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The science that studies the structure of the earth (or other planets), together with its origin and development, especially by examination of its rocks
from the GNU version of the Collaborative International Dictionary of English
- n. 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.
- n. A treatise on the science.
from The Century Dictionary and Cyclopedia
- n. The science of the past and present condition of the earth, with special reference to the physical changes which it has undergone or which may still be taking place.
- n. ;
- n. The geological conditions or features of a place: as, the geology of a district.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a science that deals with the history of the earth as recorded in rocks
Medieval Latin geōlogia, study of earthly things : Greek geō-, geo- + Greek -logiā, -logy.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Modern Latin geologia, from Ancient Greek γῆ (gē, "earth") + -logia ("-logy"). (Wiktionary)