polianite

[ poh-lee-uh-nahyt ]

nounMineralogy.
  1. a variety of pyrolusite, MnO2, having well-developed crystals.

Origin of polianite

1
1840–50; <German Polianit, irregular <Greek poliaínesthai to grow white (with sea foam), derivative of poliós gray; see -ite1

Words Nearby polianite

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024