volcanic glass
volcanic glass · volcanic glasses
A natural glass produced by the cooling of molten lava, or a liquid fraction of it,…A natural glass produced by the cooling of molten lava, or a liquid fraction of it, too rapidly to permit crystallization.
Meaning
1 senses(countable, uncountable)A natural glass produced by the cooling of molten lava, or a liquid fraction of it, too rapidly to permit crystallization.
a kind of natural glass produced when molten lava cools very rapidly
Forms
plural: volcanic glasses| Singular | volcanic glass |
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| Plural | volcanic glasses |
regular
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable