• WordNet 3.6
    • adj igneous like or suggestive of fire "a fiery desert wind","an igneous desert atmosphere"
    • adj igneous produced by the action of fire or intense heat "rocks formed by igneous agents"
    • adj igneous produced under conditions involving intense heat; especially from molten magma" "igneous rock is rock formed by solidification from a molten state","igneous fusion is fusion by heat alone","pyrogenic strata"
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Webster's Revised Unabridged Dictionary
    • Igneous Pertaining to, having the nature of, fire; containing fire; resembling fire; as, an igneous appearance.
    • Igneous (Geol) Resulting from, or produced by, the action of fire; as, lavas and basalt are igneous rocks.
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Century Dictionary and Cyclopedia
    • igneous Pertaining to, consisting of, having the nature of, or resembling fire: as. igneous particles; igneous appearances.
    • igneous Produced through the agency of fire, or as the result of volcanic and eruptive forces: used in geology in contradistinction to aqueous. A rock has an igneous origin when it has been discharged from a volcano; it has an aqueous origin when deposited from water. All aqueous rocks are made up of the debris of igneous ones, with the exception of such as are the result of organic agencies —that is, such as have been formed through the agency of plants or animals. Some rocks, however, are at the same time of both aqueous and igneous origin, as when volcanic ashes are thrown into water, and deposited in a stratified form.
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Chambers's Twentieth Century Dictionary
    • adj Igneous ig′ne-us pertaining to, consisting of, or like fire:
    • Igneous rocks, those which have been erupted from the heated interior of the earth—hence also termed Eruptive rocks
    • adj Igneous ig′ne-us (geol.) produced by the action of fire
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Webster's Revised Unabridged Dictionary
L. igneus, fr. ignis, fire; allied to Skr. agni, Lith. ugnis, OSlav. ogne,
Chambers's Twentieth Century Dictionary
L. igneusignis, fire.


In literature:

The color was about right, and he knew datolite was found in igneous rocks of volcanic origin.
"The Flaming Mountain" by Harold Leland Goodwin
It is superfluous to cite localities for them as they are among the commonest of igneous rocks.
"Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 6" by Various
In Bohemia, North America and Canada igneous rocks have been observed.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 1" by Various
They contain a great variety of sediments and igneous rocks.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 2" by Various
The first are the Igneous rocks, which means rocks made by fire.
"The Geological Story of the Isle of Wight" by J. Cecil Hughes
Igneous intrusions consist only of unimportant dikes of trap.
"Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 3" by Various
Of these igneous rocks I shall treat more particularly in another part of this work.
"A Manual of Elementary Geology" by Charles Lyell
Its importance consisted in proving that serpentine was, or rather had been, an igneous rock.
"Charles Lyell and Modern Geology" by Thomas George Bonney
Pratt as basic segregations from an igneous magma.
"Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3" by Various
The zeolites occur very commonly in cavities in igneous rocks, and also in mineral veins.
"Geology" by James Geikie

In news:

Curiosity rover finds specimen that resembles earthly igneous rocks, never before observed on Mars.
Her research focuses on large silicic igneous systems in the Snake River Plain.

In science:

Highcalcium pyroxene as an indicator of igneous differentiation in asteroids and meteorites.
Meteoritical and dynamical constraints on the growth mechanisms and formation times of asteroids and Jupiter
Fine-grained CAI with nodular tex ture shown in the inser t. H . Hibonite-glass CAI spherule. I. Coarse-grained u ltra-refractory igneous CAI E101,1 (ElGoresy et al. 2002). A ll objects are from the Efremovka carbonaceous chondrite, excep t H from the Murch ison carbonaceous chondrite.
Meteorites and the physico-chemical conditions in the early solar nebula
Takeuchi, B. W.S. Lau, Electric Currents Streaming out of Stressed Igneous Rocks – A Step Towards Understanding Pre-Earthquake Low Frequency EM Emissions, Special Issue “Recent Progress in Seismo Electromagnetics”, Guest Editors M.
Skopje and Sofia 2005 Earthquake and Geomagnetic data and the Geomagnetic Quake as Imminent Reliable Earthquakes Precursor