Origin of igneous
Examples from the Web for igneous
Sills, or intrusive sheets, are bed-like masses which have been thrust between the planes of sedimentary or even of igneous rocks.
We shall now consider the igneous agents that act on the earth's surface.
The igneous rocks present a considerable range of composition.
It is estimated that the feldspars make up 50 per cent of all the igneous rocks and 16 per cent of the sedimentary rocks.The Economic Aspect of Geology|C. K. Leith
Basalt, bas-awlt′, n. a hard, dark-coloured rock of igneous origin.
British Dictionary definitions for igneous
Word Origin for igneous
Word Origin and History for igneous
1660s, from Latin igneus "of fire, fiery," from ignis "fire," from PIE *egni- "fire" (cf. Sanskrit agnih "fire, sacrificial fire," Old Church Slavonic ogni, Lithuanian ugnis "fire").