igneous rock

Cultural

Rocks formed by the cooling and solidifying of molten materials. Igneous rocks can form beneath the Earth's surface, or at its surface, as lava.

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Granite, solid volcanic lava, and basalt are examples of igneous rock.

Example Sentences

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Now if you were awake in high school science class, you’re thinking, igneous rock: volcanic lava.

From Los Angeles Times • May 3, 2024

One popular theory suggests that minerals released by the weathering of igneous rock sucked enough carbon dioxide from the atmosphere to set off a deep freeze.

From New York Times • Feb. 7, 2024

Which dark igneous rock is the most common rock formed from volcanic lava?

From Slate • Nov. 16, 2023

Collected in September 2021, the rover’s first sample is thought to be igneous rock from an ancient lava flow.

From Scientific American • Apr. 5, 2023

Batholite, a mass of igneous rock having no visible floor, and presumed to pass down into some region of the earth's crust where molten rocks at one time prevailed over all others.

From The New Gresham Encyclopedia. Vol. 1 Part 3 Atrebates to Bedlis by Various

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023