Meaning & use
volcanism
The processes by which magma and gases erupt from within a planet's surface.
See it in a sentence
Scientists study volcanism on Mars to understand the planet's ancient geological history.
Volcanism along the fault line has created a chain of active and dormant peaks.
A note on using this word
Volcanism is a scientific term used broadly for eruption processes, distinct from a single volcanic eruption event.
Words with a similar meaning
volcanic activity
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