See Also: igneous(medicine)
igneous(dictionary)
igneous(dictionary)
igneous rock(encyclopedia)

igneous (iou)



igneous adjective. M17.
[from Latin igneus from ignis fire, + -OUS: see -EOUS.]
Pertaining to or of the nature of fire; fiery; produced by the action of fire. M17.
Geology. Produced by volcanic or magmatic agency; (of rock) that has solidified from lava or magma. L18.