'Pyrophyllite' definitions:
Definition of 'pyrophyllite'
From: WordNet
noun
A white or greenish aluminum silicate mineral (resembles talc)
Definition of 'Pyrophyllite'
From: GCIDE
- Pyrophyllite \Py*roph"yl*lite\, n. [Pyro- + Gr. ? leaf.] (Min.) A mineral, usually of a white or greenish color and pearly luster, consisting chiefly of the hydrous silicate of alumina. [1913 Webster]