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Definition of polianite - 1 dictionary result

po⋅li⋅a⋅nite

[poh-lee-uh-nahyt]
–noun Mineralogy.
a variety of pyrolusite, MnO2, having well-developed crystals.

Origin:
1840–50; < G Polianit, irreg. < Gk poliaínesthai to grow white (with sea foam), deriv. of poliós gray; see -ite 1
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Based on the Random House Dictionary, © Random House, Inc. 2009.
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