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geology
7 dictionary results for: geology
Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This
ge·ol·o·gy       [jee-ol-uh-jee] Pronunciation Key
–noun, plural -gies.
1.the science that deals with the dynamics and physical history of the earth, the rocks of which it is composed, and the physical, chemical, and biological changes that the earth has undergone or is undergoing.
2.the study of this science.
3.the geologic features and processes occurring in a given region on the earth or on a celestial body: the geology of Mars; the geology of eastern Kentucky.

[Origin: 1680–90; geo- + -logy]
American Heritage Dictionary - Cite This Source - Share This
ge·ol·o·gy       (jē-ŏl'ə-jē)  Pronunciation Key 
n.   pl. ge·ol·o·gies
  1. The scientific study of the origin, history, and structure of the earth.
  2. The structure of a specific region of the earth's crust.
  3. A book on geology.
  4. The scientific study of the origin, history, and structure of the solid matter of a celestial body.


[Medieval Latin geōlogia, study of earthly things : Greek geō-, geo- + Greek -logiā, -logy.]

ge'o·log'ic (jē'ə-lŏj'ĭk), ge'o·log'i·cal adj., ge'o·log'i·cal·ly adv., ge·ol'o·gist n.
Online Etymology Dictionary - Cite This Source - Share This
geology 
1735, Mod.L. geologia "the study of the earth," from ge "earth" + logia, from logos "speech, word, discourse." In M.L., geologia (14c.) meant "study of earthly things," i.e. law, as distinguished from arts and sciences, which concern the works of God.

WordNet - Cite This Source - Share This
geology

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

The American Heritage Science Dictionary - Cite This Source - Share This
geology       (jē-ŏl'ə-jē)  Pronunciation Key 
  1. The scientific study of the origin of the Earth along with its rocks, minerals, land forms, and life forms, and of the processes that have affected them over the course of the Earth's history.
  2. The structure of a specific region of the Earth, including its rocks, soils, mountains, fossils, and other features.

American Heritage New Dictionary of Cultural Literacy, Third Edition - Cite This Source - Share This
geology

The science devoted to the study of the Earth, particularly the solid Earth and the rocks that compose it.


Webster's Revised Unabridged Dictionary - Cite This Source - Share This

Geology

Ge*ol"o*gy\, n.; pl. Geologies. [Gr. ge`a, gh^, the earth + -logy: cf. F. g['e]ologie.]

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.

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