Plagionite

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Plagionite \Pla"gi*o*nite\, n. [Gr. pla`gios oblique. So called
     in allusion to its usually oblique crystallization.] (Min.)
     A sulphide of lead and antimony, of a blackish lead-gray
     color and metallic luster.
     [1913 Webster]