noun

geology

jih-OL-uh-jih

noun

The scientific study of the earth's structure, materials, and history, especially through its rocks.

"He took a course in geology to understand how mountains form."

The physical rock structure of a particular region.

"The geology of the area made it rich in coal deposits."

How to Use Geology

Learner’s notes

In plain EnglishThe science of rocks, land formations, and how the earth changes over time.

geologies plural

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He took a course in _____ to understand how mountains form.

From geo- ("earth") plus -logy ("study of"), ultimately from Greek roots.

eulogy apology zoology biology ecology analogy trilogy theology ideology oncology pathology mythology