Definition of "igneous" []

• Of, relating to, or characteristic of fire. (adjective)
• Geology Formed by solidification from a molten state. Used of rocks. (adjective)
• Geology Of or relating to rock so formed; pyrogenic. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "They are called "igneous" rocks, from the Latin word"
• "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."