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Pronunciation varies by accent · noun
(mineralogy) manganese dioxide, occurring in hard tetragonal crystals.
Use polianite when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Polianite means (mineralogy) manganese dioxide, occurring in hard tetragonal crystals.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use polianite where its definition matches the intended context.
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