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volcano.

A vent or fissure on the surface of a planet (usually in a mountainous form) with a magma chamber attached to the mantle of a planet or moon, periodically erupting forth lava and volcanic gases onto the surface.

7 characters3 syllables approx.English language

Meaning & usage

noun/vɒlˈkeɪ.nəʊ/Received-Pronunciation/vɒlˈkɑː.nəʊ/Received-Pronunciation, obsolete/vɔlˈkɛjnəw/British, Southern, Standard/vɑlˈkeɪ.noʊ/General-American
  1. A vent or fissure on the surface of a planet (usually in a mountainous form) with a magma chamber attached to the mantle of a planet or moon, periodically erupting forth lava and volcanic gases onto the surface.

    Iceland's volcanoes are among the most active on Earth.
  2. A kind of firework producing an upward plume of sparks.

Where this word comes from

From Italian vulcano, from Vulcano (“a small volcanic island in the Tyrrhenian Sea”), from Latin Vulcānus (“Vulcan, the Roman god of fire and metalworking”). Doublet of bolcane and Vulcan.

verb/vɒlˈkeɪ.nəʊ/Received-Pronunciation/vɒlˈkɑː.nəʊ/Received-Pronunciation, obsolete/vɔlˈkɛjnəw/British, Southern, Standard/vɑlˈkeɪ.noʊ/General-American
  1. to erupt; to burst forth

Where this word comes from

From Italian vulcano, from Vulcano (“a small volcanic island in the Tyrrhenian Sea”), from Latin Vulcānus (“Vulcan, the Roman god of fire and metalworking”). Doublet of bolcane and Vulcan.

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.