形容詞 igneous:

1. produced under conditions involving intense heat
   同義詞：pyrogenic, pyrogenous
2. produced by the action of fire or intense heat
   同義詞：eruptive
3. like or suggestive of fire
   同義詞：fiery

ig.ne.ous

adj.（形容詞）
Of, relating to, or characteristic of fire.
火的，與火有關(guān)的，具有火的特點(diǎn)的
Geology
【地質(zhì)學(xué)】
Formed by solidification from a molten state. Used of rocks.
火成的：由熔化的巖石凝固形成的。用于修飾巖石
Of or relating to rock so formed; pyrogenic.
火成巖的，熔灰?guī)r的：按上述方法形成的巖石的，與之有關(guān)的；火成的

來(lái)源：
From Latin igneus
源自 拉丁語(yǔ) igneus
from ignis [fire]
源自 ignis [火]