PILLOW LAVA

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

Lava that hardened in rounded shapes suggestive of pillows; believed to result from underwater eruptions

Classified under:

Nouns denoting substances

Hypernyms ("pillow lava" is a kind of...):

lava (rock that in its molten form (as magma) issues from volcanos; lava is what magma is called when it reaches the surface)

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