a light glass formed on the surface of some lavas; used as an abrasive

listen to the pronunciation of a light glass formed on the surface of some lavas; used as an abrasive
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pumice
a light glass formed on the surface of some lavas; used as an abrasive

    Hyphenation

    a light glass formed on the sur·face of some lavas; used as an a·bra·sive

    Pronunciation

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