igneous

adjective
ig·​ne·​ous | \ ˈig-nē-əs How to pronounce igneous (audio) \

Definition of igneous

1 : of, relating to, or resembling fire : fiery
2a : relating to, resulting from, or suggestive of the intrusion or extrusion of magma or volcanic activity
b : formed by solidification of magma igneous rock

Examples of igneous in a Sentence

Recent Examples on the Web

This whorl of igneous material became a vineyard 20 years ago, when brothers Peter and Arpad Molnar first planted Cabernet Sauvignon here. Esther Mobley, San Francisco Chronicle, "The rise of the Red Hills of Lake County," 1 June 2018 The massive cascade tumbles over black-brown basalt rock, an igneous rock born of billion-year-old lava flows. Chelsey Lewis, USA TODAY, "Seven natural wonders in Wisconsin," 16 Mar. 2018 The massive cascade tumbles over black-brown basalt rock, an igneous rock born of billion-year-old lava flows. Chelsey Lewis, USA TODAY, "Seven natural wonders in Wisconsin," 16 Mar. 2018 The massive cascade tumbles over black-brown basalt rock, an igneous rock born of billion-year-old lava flows. Chelsey Lewis, USA TODAY, "Seven natural wonders in Wisconsin," 16 Mar. 2018 The massive cascade tumbles over black-brown basalt rock, an igneous rock born of billion-year-old lava flows. Chelsey Lewis, USA TODAY, "Seven natural wonders in Wisconsin," 16 Mar. 2018 The massive cascade tumbles over black-brown basalt rock, an igneous rock born of billion-year-old lava flows. Chelsey Lewis, USA TODAY, "Seven natural wonders in Wisconsin," 16 Mar. 2018 The massive cascade tumbles over black-brown basalt rock, an igneous rock born of billion-year-old lava flows. Chelsey Lewis, USA TODAY, "Seven natural wonders in Wisconsin," 16 Mar. 2018 The massive cascade tumbles over black-brown basalt rock, an igneous rock born of billion-year-old lava flows. Chelsey Lewis, USA TODAY, "Seven natural wonders in Wisconsin," 16 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'igneous.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of igneous

1664, in the meaning defined at sense 1

History and Etymology for igneous

Latin igneus, from ignis fire; akin to Sanskrit agni fire

Keep scrolling for more

Learn More about igneous

Statistics for igneous

Look-up Popularity

Time Traveler for igneous

The first known use of igneous was in 1664

See more words from the same year

Keep scrolling for more

More Definitions for igneous

igneous

adjective

English Language Learners Definition of igneous

technical : formed when hot, liquid rock cools and becomes hard

igneous

adjective
ig·​ne·​ous | \ ˈig-nē-əs How to pronounce igneous (audio) \

Kids Definition of igneous

: formed by hardening of melted mineral material within the earth igneous rock

More from Merriam-Webster on igneous

Rhyming Dictionary: Words that rhyme with igneous

Thesaurus: All synonyms and antonyms for igneous

Comments on igneous

What made you want to look up igneous? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

an enemy or opponent

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Latin Quiz

  • roman forum
  • Which of the following months comes from a Latin word for “ten”?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!