volcanic glass

listen to the pronunciation of volcanic glass
English - Turkish
volkanik cam
English - English
a kind of natural glass produced when molten lava cools very rapidly
Natural glass produced by the cooling of molten lava too quickly to permit crystallization. Any glassy rock formed from lava or magma that has a chemical composition close to that of granite. Such molten material may reach very low temperatures without crystallizing, but its viscosity may become very high. Because high viscosity inhibits crystallization, the combination of sudden cooling and loss of volatiles, as when lava extrudes from a volcanic vent, tends to chill the material to a glass rather than crystallize it
volcanic glass

    Hyphenation

    vol·can·ic glass

    Turkish pronunciation

    välkänîk gläs

    Pronunciation

    /välˈkanək ˈglas/ /vɑːlˈkænɪk ˈɡlæs/
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