geologic
Americanadjective
Other Word Forms
Etymology
Origin of geologic
Explanation
Anything that's geologic has something to do with the structure of the Earth and the way it has changed over time. Scientists who study geologic features — including rocks in the earth's crust, volcanoes, sandy beaches, and all the other non-living things that make up our planet — are called geologists. If you're interested in geologic formations like the long, pointy mineral deposits that grow in caves, stalagmites and stalactites, you might consider a geologic career path too! Geologic is from geology and its Greek roots geo, "earth," and -logia, "a science."
Vocabulary lists containing geologic
Earth Science - Middle School
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Earth Science - High School
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geo
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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.
The rapid drawdown caused damage to the geologic sites around the Gulf Coast where the oil is stored.
From The Wall Street Journal • Mar. 9, 2026
Much of that growth came from unconventional drilling, including hydraulic fracturing and horizontal drilling from geologic formations such as shale rock.
From MarketWatch • Feb. 16, 2026
“This very rare geologic feature of translucent petroleum has been filtered by nature,” the sign read.
From Los Angeles Times • Feb. 4, 2026
Researchers rely heavily on fossilized bones to understand these environments, since the soft blades of seagrass rarely leave impressions in the geologic record.
From Science Daily • Dec. 12, 2025
Mullineaux would later tell a Senate committee that “the lateral blast extended about three times farther than any such blast recorded by the geologic history of the volcano.”
From "Mountain of Fire" by Rebecca E. F. Barone
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
