igneous

adjective ig·ne·ous \ ˈig-nē-əs \
Updated on: 9 May 2018

Definition of igneous

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

Recent Examples of igneous from the Web

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.

Origin and Etymology of igneous

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


IGNEOUS Defined for English Language Learners

igneous

Definition of igneous for English Language Learners

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


IGNEOUS Defined for Kids

igneous

adjective ig·ne·ous \ ˈig-nē-əs \

Definition of igneous for Students

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

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