| NOUN | substance | pyrolusite | a mineral consisting of manganese dioxide |
|---|
| Meaning | A mineral consisting of manganese dioxide; an important source of manganese. | |
|---|---|---|
| Broader | mineral | Solid homogeneous inorganic substances occurring in nature having a definite chemical composition |
| Substances | manganese, Mn, atomic number 25 | A hard brittle / brittle grey polyvalent metallic element that resembles iron but is not magnetic |
| Spanish | pirolusita | |
| Catalan | pirolusita | |
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