Emily Dickinson Lexicon

DI'AS-PORE, n. [Gr. διασπειρω, to disperse.]

A mineral occurring in lamellar concretions, of a pearly gray color, and infusible. A small fragment, placed in the flame of a candle, almost instantly decrepitates, and is dispersed; whence its name. It is a mineral little known. – Haüy. Brongniart. Cleaveland.