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Definitions

igneous

[ig-nee-uhs] / ˈɪg ni əs /


ADJECTIVE
molten
Synonyms


ADJECTIVE
plutonic
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.

Traditionally, lithium is mined from sources such as pegmatites, which are coarse-grained igneous rocks, and volcanic clays.

From Science Daily • Apr. 16, 2026

Heavy rare earths are formed over millions of years, as rainfall weathers igneous rocks, breaking them down and leaving elements concentrated near the surface.

From Barron's • Dec. 21, 2025

One thing about the PVP that delights Coffey is that it is composed of all three kinds of rock — sedimentary, metamorphic and igneous.

From Los Angeles Times • May 3, 2024

No geologist would dispute that shale and igneous rocks are rocks.

From Slate • Apr. 27, 2024

Tonalite, tō′nal-īt, n. an igneous rock having a granitic structure, and composed essentially of plagioclase, biolite, and quartzite.

From Chambers's Twentieth Century Dictionary (part 4 of 4: S-Z and supplements) by Various




Vocabulary lists containing igneous