perlite

Etymology
From +.

Noun

 * 1)  An amorphous volcanic glass formed by the hydration of obsidian.
 * 2) The lightweight insulating material and aggregate resulting from expanding perlite glass by heat.

Translations

 * Catalan: perlita
 * Finnish:
 * French:
 * German: Perlit
 * Italian: perlite
 * Polish:
 * Portuguese: perlita
 * Romanian:
 * Spanish: perlita
 * Turkish:

Etymology
From.