perlite

play
noun per·lite \ ˈpər-ˌlīt \

Definition of perlite

:volcanic glass that has a concentric structure, appears as if composed of concretions, is usually grayish and sometimes spherulitic, and when heated expands to form a lightweight aggregate used especially in concrete and plaster and as a medium for potting plants

perlitic

play \ˌpər-ˈli-tik\ adjective

Recent Examples of perlite from the Web

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Origin and Etymology of perlite

French, from perle pearl


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