igneous
adj/ˈɪɡ.ni.əs/
Etymology From Latin igneus (“fiery”). By surface analysis, Latin ign- + -eous.
1
Pertaining to or having the nature of fire; containing fire; resembling fire.
- The stone had an igneous appearance.
2
Geography, Geology, Natural sciences Resulting from, or produced by, great heat. With rocks, it could also mean formed from lava or magma.
- Granite and basalt are igneous rocks.
- All formations, whether igneous or aqueous, which can be shown by any such proofs to be of a date posterior to the introduction of man, will be called Recent.1835, Charles Lyell, chapter V, in Principles of Geology […] , 4th edition, volume III, London: John Murray, Book IV, page 385:
- Derived terms
- igneously, igneousness, igneous rock, large igneous province
- Coordinate terms
- * sedimentary, metamorphic