What does the word igneous mean?

    Part of speech: adjective

  • Pertaining to or formed by means of fire.

Usage examples for igneous

  1. When the igneous rocks were thrown up to the surface of the earth, they brought various metals with them. – Diggers in the Earth by Eva March Tappan
  2. We infer that the igneous rock when in a molten state was forced between the strata, much as a card may be pushed between the leaves of a closed book. – The Elements of Geology by William Harmon Norton