Definition of pillow lava in English:

pillow lava

Syllabification: pil·low la·va

noun

  • Lava that has solidified as rounded masses, characteristic of eruption under water.
    More example sentences
    • The ophiolitic rocks comprise a complete ophiolite stratigraphy: i.e. ultramafic cumulates, gabbro, sheeted dykes, pillow lava and local chert and limestone.
    • The group includes melange which consists of greywacke, limestone, pillow lava, gabbro and serpentenite blocks in a black shale matrix.
    • The upper flow unit is well exposed in the Prospect Park quarry and is made up of three types of lava flow structures: massive, columnar basalt, subaqueous, pahoehoe flow lobes, and bedded pillow lava.

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Word of the day coloratura
Pronunciation: ˌkələrəˈto͝orə
noun
elaborate ornamentation of a vocal melody