Pronunciation: ˌ p ī -r ō - ' fi- ˌ l ī t, p ī - ' rä-f ə - ˌ l ī t
Function: noun
Etymology: German Pyrophyllit, from Greek pyr- + phyllon leaf ― more at BLADE
Date: 1830
: a soft usually white or greenish mineral that is a hydrous aluminum silicate, resembles talc, occurs in a foliated form or in compact masses, and is used especially in ceramic wares