pyrogenous

American  

[pahy-roj-uh-nuhs] / paɪˈrɒdʒ ə nəs /

adjective

Geology.

1. pyrogenic.

---

Etymology

Origin of pyrogenous

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

Example Sentences

And yet not a mountain meets the eye—not even a hill—but the dark cyprières, draped with the silvery tillandsia, form a background to the picture with all the grandeur of the pyrogenous granite!

From The Quadroon Adventures in the Far West by Reid, Mayne

Hy′dric, containing hydrogen; Hydrog′enous, containing hydrogen: produced by the action of water, as applied to rocks in opposition to those that are pyrogenous, formed by the action of fire.

From Chambers's Twentieth Century Dictionary (part 2 of 4: E-M) by Various