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Webster 1913 Edition
Polianite
Po′li-a-nite
,Noun.
[Gr. [GREEK] to become gray.]
(Min.)
Manganese dioxide, occurring in tetragonal crystals nearly as hard as quartz.
Definition 2024
polianite
polianite
English
Noun
polianite (countable and uncountable, plural polianites)
- (mineralogy) manganese dioxide, occurring in hard tetragonal crystals