The Collaborative International Dictionary
Vulcanism \Vul"can*ism\, n. Volcanism.
n. (alternative spelling of volcanism English)
Vulcanism may refer to
- Volcanism or volcanic activity.
- Plutonism, a scientific theory of the Earth.
Usage examples of "vulcanism".
Marglot was developing its own planetary ring, a disk of hot ejecta expelled by violent vulcanism.
Twenty years ago, the now-moist Venerean clouds had parted briefly, and a decade-long rain had fallen, driving the planet's surface acids into chemical battle with molten rock thrown up by three centuries of fresh vulcanism.