Macroprism

1 definition found

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

  Macroprism \Mac"ro*prism\, n. [Macro- + prism.] (Crystallog.)
     A prism of an orthorhombic crystal between the macropinacoid
     and the unit prism; the corresponding pyramids are called
     macropyramids.
     [1913 Webster]