Supervolcano definition

(volcanology, neologism) A powerful volcano, often having an explosive or cataclysmic eruption.
noun
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Other Word Forms

Noun

Singular:
supervolcano
Plural:
supervolcanoes, supervolcanos

Origin of supervolcano

  • super- + volcano, coined in a 2000 documentary about the Yellowstone Caldera.

    From Wiktionary