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Definitions

basalt

[buh-sawlt, bas-awlt, bey-sawlt] / bəˈsɔlt, ˈbæs ɔlt, ˈbeɪ sɔlt /
NOUN
lava
Synonyms


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.

Instead of granite-like material, the data point to a surface made of basalt or mantle-like rock, similar to volcanic material found on Earth or the Moon.

From Science Daily • May 5, 2026

The 129-foot waterfall — a wide curtain of white water cascading from a basalt cliff face — generates its own rainbow and once was dubbed the “Eighth Wonder of the World” by President Theodore Roosevelt.

From Los Angeles Times • May 5, 2026

BOISE, Idaho—Each afternoon at around 4:30, the earth here shakes from a series of controlled explosions, as engineers blast through basalt bedrock to flatten out the ground underneath a gigantic new semiconductor factory.

From The Wall Street Journal • Feb. 17, 2026

The worst affected are the basalt columns that make up The Loom – 10 ft high leaning towers of rock.

From BBC • May 27, 2025

So' she held herself at the far end of the basalt slab they were using for a table.

From "A Game of Thrones" by George R.R. Martin




Vocabulary lists containing basalt