plural geologies
Definition of geology
1a
: a science that deals with the history of the earth and its life especially as recorded in rocks
b
: a study of the solid matter of a celestial body (such as the moon)
2
: geologic features
the geology of Arizona
3
: a treatise on geology
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Merriam-Webster unabridged
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Time Traveler for geology
The first known use of geology was in 1735
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