igneous

IPA: ˈɪgniʌs

Pertaining to or having the nature of fire; containing fire; resembling fire.
(geology) Resulting from, or produced by, great heat. With rocks, it could also mean formed from lava or magma.

Examples of "igneous" in Sentences

They are called "igneous" rocks, from the Latin word
• Rocks are classified as igneous, sedimentary, or metamorphic, according to how they formed.
Like all the radioactive clocks used by geologists, potassium/ argon timing works only with so-called igneous rocks.
No, not as in igneous, granite, marble or quartz, but as in I just spent 5 days in Guadalajara and had a rockin 'good time.
When we pass from the agency which geologists term igneous, to aqueous and atmospheric agencies, we see the like ever growing complications of effects.
The lone science class I'd been required to take, an introductory geology course, was graded pass/fail, and though I'd passed it (barely), I still wasn't sure what "igneous" meant.
An attentive examination of a metamorphic region shows that here and there the alteration and recrystallisation have proceeded so far that the rocks graduate into granites and other so-called igneous rocks.