Dictionary.com
Thesaurus.com

igneous rock

Cultural  
  1. 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.


Discover More

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

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.

To carry out the study, Bowman compiled chemical information from about 9,000 igneous rock samples collected worldwide.

From Science Daily • May 26, 2026

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

In the case of several of these mines, igneous rock is near at hand, and the ores are believed to owe their concentration largely to the action of heated waters.

From North America by Russell, Israel C. (Cook)

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "igneous rock" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com