IGNEOUS
fiery, igneous
(adjective) like or suggestive of fire; “a fiery desert wind”; “an igneous desert atmosphere”
igneous, eruptive
(adjective) produced by the action of fire or intense heat; “rocks formed by igneous agents”
igneous, pyrogenic, pyrogenous
(adjective) produced under conditions involving intense heat; “igneous rock is rock formed by solidification from a molten state; especially from molten magma”; “igneous fusion is fusion by heat alone”; “pyrogenic strata”
Source: WordNet® 3.1
Etymology
Adjective
igneous (not comparable)
Pertaining to or having the nature of fire; containing fire; resembling fire.
(geology) Resulting from, or produced by, great heat. With rocks, it could also mean formed from lava or magma.
Source: Wiktionary
Ig"ne*ous, a. Etym: [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.)
Definition: Resulting from, or produced by, the action of fire; as, lavas
and basalt are igneous rocks.
Source: Webster’s Unabridged Dictionary 1913 Edition