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ge·ol·o·gy
1. The science that studies the origin, history, and structure of the earth, the rocks of which it is composed, and the changes that it has undergone or is undergoing.
2. Earth science including physical geology and geophysics; the history of the earth, stratigraphy, and paleontology; mineralogy, petrology; and environmental, engineering, and mining geology.
[Medieval Latin geologia, study of earthly things: Greek geo-, geo- + Greek -logia, -logy.]
geol´ogy (jê-òl´e-jê) noun geol. Abbr.
ge´olog´ic (jê´e-lòj´îk) or ge´olog´ical adjective
ge´olog´ically adverb
geol´ogist noun
