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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.

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

"Our capability to infer that the maturation stages were somehow influenced by igneous intrusions based on a small sample size is really exciting!"

From Science Daily • May 7, 2024

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

Zalasiewicz points out that some rocks originate as liquid, as when lava cools and solidifies into igneous rocks; these rocks form quickly.

From Slate • Apr. 27, 2024

A variety of pyroxene, usually of a black or dark green color, occurring in igneous rocks, such as basalt; Ð also used instead of the general term pyroxene.

From Webster's Unabridged Dictionary (2nd 100 Pages) by Webster, Noah