pyrogenous

[ pahy-roj-uh-nuhs ]

adjective

, Geology.

1. pyrogenic ( def 2 ).

Word History and Origins

Origin of pyrogenous¹

First recorded in 1830–40; pyro- + -genous

Example Sentences

Gold is, however, much more common in the alluvial grounds than among the primitive and pyrogenous rocks just described.

From Project Gutenberg

Pyrogenous oil of turpentine is another cheap and good solvent.

From Project Gutenberg

It is, however, much more common in alluvial grounds than among primitive and pyrogenous rocks.

From Project Gutenberg