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pillow lava

noun — 2 senses

pillow lava

noun
1

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

2

Geography, Geology, Natural sciences A 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:
Hypernyms
lava

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.