Emily Dickinson Lexicon

PYR'OX-ENE, n. [Gr. πυρ, fire, and ξενος, a stranger; a guest in fire, unaltered.]

1. A mineral formerly called augite. – Ure.
2. A species of minerals, which has been named volcanic shorl; but it is a family which comprehends many substances of different appearances. It is almost always crystalized, but in complicated forms. – Dict. Nat. Hist.