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Synonyms

geologist

American  
[jee-ol-uh-jist] / dʒiˈɒl ə dʒɪst /

noun

  1. a person who specializes in geologic research and study.


Etymology

Origin of geologist

First recorded in 1785–95; geolog(y) + -ist

Explanation

If you’re fascinated by rocks and spend hours digging for interesting samples in the backyard, you might be a budding geologist, a scientist who studies all things related to the Earth. A geologist is an expert in the field of geology, the study of what the Earth is made of and how it was formed. The woman on TV explaining the history of an active volcano that’s ready to erupt? She’s probably a geologist who specializes in volcanoes. Geologists can specialize in many different aspects of the field, ranging from earthquakes to soil erosion. What they all have in common is that they’re trying to figure out how the Earth works.

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Vocabulary lists containing geologist

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Toby and Daniel Rice are both Rice Investment operating partners, while their brothers Derek, a geologist, and Ryan, a petroleum reservoir engineer, work on the firm’s technical and administrative team, according to the presentation.

From The Wall Street Journal • Apr. 27, 2026

Grace, 67, a retired geologist, has lived on the edge of Abercarn for more than 20 years, where housing gives way to open moorland.

From BBC • Apr. 19, 2026

Two of the men are engineers and one is a geologist, according to local media.

From Barron's • Feb. 9, 2026

To find out whether these policy changes truly reduced lead exposure in people, Smith worked with geologist Diego Fernandez and Cerling.

From Science Daily • Feb. 7, 2026

Their oldest sister, Mary, was already married to a new friend of his, Charles Lyell, a prominent geologist.

From "Charles and Emma: The Darwins' Leap of Faith" by Deborah Heiligman