geological
adjective
geo·log·i·cal
ˌjē-ə-ˈlä-ji-kəl 
variants
or less commonly geologic
: of, relating to, or based on geology
Examples of geological in a Sentence
Recent Examples on the Web
In August, scientists revealed that another geological anomaly in the mantle — a mass of hot rock that sits about 124 miles (200 kilometers) beneath the Appalachian Mountains range in New England — was formed about 80 million years ago when Greenland and North America split apart.
—
Katie Hunt, CNN Money, 29 Dec. 2025
Identifying a suitable location for a deep geological nuclear facility is as complex as the construction itself, requiring vast, stable rock formations capable of safely enclosing an underground repository.
—Bojan Stojkovski, Interesting Engineering, 27 Dec. 2025
Computer simulations showed that any methane on TRAPPIST-1e would be rapidly destroyed by intense ultraviolet radiation, surviving only about 200,000 years — not nearly long enough for geological processes to replenish it.
—Sharmila Kuthunur, Space.com, 26 Dec. 2025
But if the geological plumbing is clogged, perhaps by silica minerals or rock debris, the pressure can build until the water explodes, vaporizing into steam and shooting boiling water, mud, rocks, and other debris into the air.
—Owen Clarke, Outside, 23 Dec. 2025
Long-standing geological evidence from Antarctica and elsewhere around the world shows that as ice melts and flows off the land, the land itself rises because the ice no longer presses it down.
—Keiji Horikawa, The Conversation, 22 Dec. 2025
The Smackover Formation is a lithium-rich geological area spanning through east Texas, south Arkansas and into western Florida.
—Arkansas Online, 16 Dec. 2025
The resolution goes on to request, in part, that The Boring Company participate in a formal public briefing before the whole council and release all environmental, geological, safety and fiscal studies for independent review.
—Austin Hornbostel, Nashville Tennessean, 10 Dec. 2025
Swissaid blamed the absence of industrial mining on South Sudan’s history of civil war and conflict since 2013, and the lack of geological mapping needed to properly organize mineral exploration.
—Alexander Onukwue, semafor.com, 8 Dec. 2025
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Katie Hunt, CNN Money, 29 Dec. 2025
Identifying a suitable location for a deep geological nuclear facility is as complex as the construction itself, requiring vast, stable rock formations capable of safely enclosing an underground repository.
—Bojan Stojkovski, Interesting Engineering, 27 Dec. 2025
Computer simulations showed that any methane on TRAPPIST-1e would be rapidly destroyed by intense ultraviolet radiation, surviving only about 200,000 years — not nearly long enough for geological processes to replenish it.
—Sharmila Kuthunur, Space.com, 26 Dec. 2025
But if the geological plumbing is clogged, perhaps by silica minerals or rock debris, the pressure can build until the water explodes, vaporizing into steam and shooting boiling water, mud, rocks, and other debris into the air.
—Owen Clarke, Outside, 23 Dec. 2025
Long-standing geological evidence from Antarctica and elsewhere around the world shows that as ice melts and flows off the land, the land itself rises because the ice no longer presses it down.
—Keiji Horikawa, The Conversation, 22 Dec. 2025
The Smackover Formation is a lithium-rich geological area spanning through east Texas, south Arkansas and into western Florida.
—Arkansas Online, 16 Dec. 2025
The resolution goes on to request, in part, that The Boring Company participate in a formal public briefing before the whole council and release all environmental, geological, safety and fiscal studies for independent review.
—Austin Hornbostel, Nashville Tennessean, 10 Dec. 2025
Swissaid blamed the absence of industrial mining on South Sudan’s history of civil war and conflict since 2013, and the lack of geological mapping needed to properly organize mineral exploration.
—Alexander Onukwue, semafor.com, 8 Dec. 2025
Cite this Entry
“Geological.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/geological. Accessed 5 Jan. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share