SISSVoc Default


definition Perlite' is a volcanic glass with sufficient water content to cause it to expand, or froth up, when heated, forming a lightweight granular aggregate; used in construction, insulation, packaging and agriculture more like this
notation more like this
Perl more like this
source This vocabulary more like this
Resource original
Concept original
broader original
narrower perlite original
in scheme commodity-code original
is primary topic of perlite