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ignoble
ignominious
ignominy
ignoramus
ignorance
ignorant
ignore
IGO
Igorot
IGSA
Iguaçu
Iguaçu Falls
iguana
iguana air
iguanodon
IGY
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igneous

ig·ne·ous [ ígnee əss ]


adjective 
Definition:
 
1. formerly molten: describes rock formed under conditions of intense heat or produced by the solidification of volcanic magma on or below the Earth's surface

2. relating to fire: relating to or characteristic of fire ( formal )

[Mid-17th century. < Latin igneus< ignis "fire"]
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