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volatile
volatile organic compound
volatilize
volcanic
volcanic arc
volcanic bomb
volcanic cone
volcanic dust
volcanic glass
volcanic plug
volcanicity
volcanise
volcanism
volcanize
volcano
volcanology
vole (1)
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volcanic glass
vol·can·ic glass


noun 
Definition:
 
natural glass: natural glass formed when molten lava from a volcano cools too quickly to crystallize
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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