Igneous definition

ĭgnē-əs
Relating to the processes, such as volcanism, by which such rocks and minerals form.
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Of, containing, or having the nature of, fire; fiery.
adjective
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Relating to or characteristic of fire.
adjective
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Relating to rocks or minerals formed by the cooling and hardening of magma or molten lava. Basalt and granite are examples of igneous rocks.
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Produced by the action of fire; specif., formed by volcanic action or intense heat, as intrusive or extrusive rock solidified from molten magma or lava.
adjective
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The definition of igneous is something produced by volcanic action or intense fire.

Rocks that have formed from solidified lava from a volcano are an example of rocks that would be described as igneous.

adjective
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Formed by solidification from a molten state. Used of rocks.
adjective
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Relating to rock so formed; pyrogenic.
adjective
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Pertaining to, having the nature of fire; containing fire; resembling fire; as, an igneous appearance.
adjective
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(geology) Resulting from, or produced by, the action of great heat; with rocks, it could also mean formed from lava/magma; as, granite and basalt are igneous rocks.
adjective
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Origin of igneous

  • From Latin igneus from ignis fire

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin igneus.

    From Wiktionary

Igneous Sentence Examples

  • A complex of igneous rocks of different ages covers immense areas in the central Transvaal.

  • The system is without any notable amount of igneous rock.

  • Amongst the most interesting features of the Bakony-wald are the volcanic and the igneous rocks.

  • Tremolite-schist and anthophyllite-schist are in nearly all cases the representatives of the ultra-basic igneous rocks such as peridotite in regions of high metamorphism.

  • Grits, igneous rocks, ashbeds and limestones may and often do show cleavage.

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Words near igneous in the Dictionary