igneousadj.
/ˈɪɡniːəs/ 1. Of, pertaining to, or of the nature of fire; fiery.
ΘΚΠ
the world > matter > properties of materials > temperature > heat > burning > fire or flame > [adjective]
firenOE
fieryc1300
Phlegethontic1600
empyreal1601
ignic1612
ignean1635
Phlegethontala1649
igneous1664
igneal1669
vulcanic1687
brimstony1924
1664 H. More Apol. in Modest Enq. Myst. Iniquity 496 There are many instances how Igneous and Lucid they [the bodies of angels] are.
1778 J. Priestley Free Discuss. Doctr. Materialism 262 The soul... It was first conceived to be an aerial, or an igneous substance.
1830 C. Lyell Princ. Geol. I. 327 Earthquakes and igneous exhalations.
1876 D. Page Adv. Text-bk. Geol. (ed. 6) ii. 39 Volcanoes, earthquakes, and other igneous phenomena.
2. Resulting from, or produced by, the action of fire; esp. in Geology. Produced by volcanic agency (opposed to aqueous adj. 3).
ΘΚΠ
the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [adjective]
fire-born?a1656
igneous1661
Plutonic1794
pyrogenous1821
Plutonian1823
pyrogenic1823
1661 J. Glanvill Vanity of Dogmatizing xviii. 171 Ignorant of the immediate way of igneous solutions.
1794 R. Kirwan Elements Mineral. (ed. 2) I. 455 The igneous origin of basalts.
1812 H. Davy Elements Chem. Philos. 48 The analysis of mineral bodies..in experiments..on their igneous fusion.
1830 C. Lyell Princ. Geol. I. iv. 58 Basalt and other igneous rocks.
1858 A. Geikie Story of Boulder viii. 146 The cleft..has been once filled by a wall of igneous rock called a trap-dyke.
This entry has not yet been fully updated (first published 1899; most recently modified version published online September 2018).
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adj.1661