igneous

Definition

Pertaining to or having the nature of fire; containing fire; resembling fire.

Etymology

From Latin igneus (“fiery”).

Example Sentences

• "The stone had an igneous appearance."
• "Granite and basalt are igneous rocks."
• "All formations, whether igneous or aqueous, which can be shown by any such proofs to be of a date posterior to the introduction of man, will be called Recent."