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Definition of igneous
igneous
/ˈɪɡ.ni.əs/
ig · ne · ous
igneous Lexical Profile
CEFR
C1
Grade
7
Tier
2
Usage
Top 10k
Syllables
3
igneous Game Scores & Validity
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Wordle Guess
• adjective
1
(of rock or geological formations) Formed through the cooling and solidification of molten magma or lava.
Example
"Granite and basalt are two of the most common igneous rocks found in the Earth's crust."
2
Relating to, characteristic of, or produced by fire or intense heat.
Example
"Early naturalists attributed the sudden appearance of the island to igneous activity beneath the ocean floor."
Synonyms
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View all antonyms for igneous• Rhymes for igneous
Word Origin & Etymology
Borrowed in the mid-17th century from Latin igneus ('fiery'), derived from ignis ('fire'), a cognate of Sanskrit agni.
Cite this Entry
Wordmom. (2026). Definition of Igneous. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/igneous