'Psilomelane' definitions:
Definition of 'psilomelane'
(from WordNet)
noun
A mineral consisting of hydrated basic oxide of manganese and barium; a source of manganese
Definition of 'Psilomelane'
From: GCIDE
- Psilomelane \Psi*lom"e*lane\, n. [Gr. ? bare + ?, ?, black.] (Min.) A hydrous oxide of manganese, occurring in smooth, botryoidal forms, and massive, and having an iron-black or steel-gray color. [1913 Webster]