Dictionary

igneous

adjective ig·ne·ous \ˈig-nē-əs\

: formed when hot, liquid rock cools and becomes hard

Full 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>

Origin of IGNEOUS

Latin igneus, from ignis fire; akin to Sanskrit agni fire
First Known Use: 1664

Other Geology Terms

anthracite, boulder, cwm, erratic, intrusive, mesa, sedimentary, silt, swale

Rhymes with IGNEOUS

IGNEOUS Defined for Kids

igneous

adjective ig·ne·ous \ˈig-nē-əs\

Definition of IGNEOUS for Kids

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

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