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Webster 1913 Edition
Geology
Ge-ol′o-gy
,Noun.
pl.
Geologies
(#)
. [Gr.
γέα
, γῆ
, the earth + -logy
: cf. F. géologie
.] 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 1828 Edition
Geology
GEOL'OGY
,Noun.
The doctrine or science of the structure of the earth or terraqueous globe, and of the substances which compose it; or the science of the compound minerals or aggregate substances which compose the earth, the relations which the several constituent masses bear to each other, their formation, structure, position and direction: it extends also to the various alterations and decompositions to which minerals are subject.