| | Definition: | | \Ig"ne*ous\, a. [L. igneus, fr. ignis fire; allied to
Skr. agni, Lith. ugnis, OSlav. ogne.]
1. Pertaining to, having the nature of, fire; containing
fire; resembling fire; as, an igneous appearance.
2. (Geol.) Resulting from, or produced by, the action of
fire; as, lavas and basalt are igneous rocks.
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