vermiculite

/ver-mik-yuh-lahyt/US // vərˈmɪk yəˌlaɪt //UK // (vɜːˈmɪkjʊˌlaɪt) //

蛭石,蛭子,朱砂

Definitions

n.名词 noun

1
- : any of a group of platy minerals, hydrous silicates of aluminum, magnesium, and iron, that expand markedly on being heated: used in the expanded state for heat insulation and as a plant growth medium.