geology
/dʒɪˈɒlədʒɪ/ · ge·ol·o·gy
noun
- The science that studies the structure of the Earth (or other planets), together with its origin and development, especially by examination of its rocks. The geologist spent years studying the geology of the Grand Canyon.
- The geological structure of a region. The geology of the Alps is characterized by towering mountain ranges and deep valleys.
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Did you know? The term 'geology' was first used in the 16th century to describe the study of the Earth's composition and history, but it wasn't until the 19th century that the field became a distinct scientific discipline.