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Synonyms

geologist

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

noun

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


Other Word Forms

Noun Inflected Forms

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.

See Examples For:

“To a geologist, this is not at all surprising.”

From Los Angeles Times Jun. 25, 2026

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

The books themselves were both 1836 works about fossils, written by geologist Reverend William Buckland.

From BBC Mar. 1, 2026

The search began in 2019 in the Sahara Desert, where French geologist Hugues Faure had said he found a tooth belonging to the giant predator Carcharodontosaurus in the 1950s.

From Barron's Feb. 27, 2026

It was Arthur Holmes, the English geologist who did so much to determine the age of the Earth, who suggested a possible way.

From "A Short History of Nearly Everything" by Bill Bryson

The archive brings together surveys conducted by Belgian geologists as well as files from mining companies that operated in the vast African country before independence in 1960.

From Barron's Jul. 3, 2026

More recently, however, geologists have identified a number of smaller secondary faults connected to the system.

From Science Daily May 19, 2026

Today's North Sea is what geologists call a mature and declining basin.

From BBC Apr. 29, 2026

No, it’s not a volcano, and while firefighters often refer to the spot as a “natural solfatara,” geologists say that isn’t quite right either.

From Los Angeles Times Apr. 24, 2026

It is not too much to say that geologists wouldn’t grasp the full implications of this thought for two hundred years, when finally they adopted plate tectonics.

From "A Short History of Nearly Everything" by Bill Bryson

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