| 单词 | pyrolusite |
| 释义 | pyrolusite /puy'reuh looh"suyt, puy rol"yeuh suyt'/, n. a common mineral, manganese dioxide, MnO2, the principal ore of manganese, used in various manufactures, as a decolorizer of brown or green tints in glass, and as a depolarizer in dry-cell batteries. [1820-30; PYRO- + Gk loûs(is) washing + -ITE1] |
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