lava dome

noun

A convex volcanic structure made of generally viscous, felsic lava, which grows slowly over time by extrusion from a volcanic edifice, either endogenously, by inflating from within, or exogenously, as erupted flow lobes of lava.

“Lava domes are rarely seen in shield volcanos.”

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Meanings

nounlava dome (plural lava domes)

plural lava domes

  1. geographyA convex volcanic structure made of generally viscous, felsic lava, which grows slowly over time by extrusion from a volcanic edifice, either endogenously, by inflating from within, or exogenously, as erupted flow lobes of lava.

    Lava domes are rarely seen in shield volcanos.

    1 more example

    Mount St. Helens has been building a new lava dome since the May, 1980 eruption.

Synonyms & antonyms

Also see
shield volcano

Translations

Chinese Mandarin 火山穹丘
  • 火山穹丘 (huǒshān qióngqiū)convex, felsic, volcanic extrusion
German Lavadom
  • Lavadomconvex, felsic, volcanic extrusion
Hebrew כיפת לבה
  • כיפת לבה (kipat láva)convex, felsic, volcanic extrusion
Italian duomo di lava, duomo lavico
  • duomo di lavaconvex, felsic, volcanic extrusion
  • duomo lavicoconvex, felsic, volcanic extrusion
Spanish domo de lava, domo tapón
  • domo de lavaconvex, felsic, volcanic extrusion
  • domo tapónconvex, felsic, volcanic extrusion
Cite this entry
APA

lava dome. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/lava%20dome

MLA

“lava dome.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/lava%20dome. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “lava dome,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/lava%20dome.

Source: lava dome on Wiktionary, CC BY-SA 4.0.