pillow lava

noun

The rock type, resembling pillows, typically formed when lava emerges from an underwater volcanic vent or a lava flow enters the ocean.

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Meanings

nounpillow lava (countable and uncountable, plural pillow lavas)

plural pillow lavas

  1. uncountablegeographyThe rock type, resembling pillows, typically formed when lava emerges from an underwater volcanic vent or a lava flow enters the ocean.
  2. countablegeographyA rock of that type.

    Ancient pillow lavas are easily recognisable. I first saw them underneath a lighthouse on the coast near Fishguard in western Wales […]

    2004, Richard Fortey, The Earth, Folio Society, published 2011, page 45

Translations

Finnish tyynylaava
  • tyynylaavarock type
Icelandic bólstraberg
  • bólstrabergrock type
Irish laibhe adhartach
  • laibhe adhartachrock type
Cite this entry
APA

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

MLA

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

Chicago

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

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