Definition, Meaning & Synonyms
lava-fountain
noun
/ˈlæ.və ˈfaʊn.tən/

Definition
A lava fountain is a vertical eruption of molten rock that is propelled into the air by the pressure of gas within the lava.

Examples
- During the volcanic eruption, a spectacular lava-fountain shot high into the sky.
- The lava-fountain at Kilauea was breathtaking to witness.
- Scientists study lava-fountains to understand how magma behaves during eruptions.

Meaning
Lava fountains occur during volcanic eruptions when gas bubbles form in the lava and burst, sending molten rock skyward.

Synonyms
- lava jet
- lava plume
- geyser of lava