macroprism

Century Dictionary and Cyclopedia

1. n. A prism of an ortho-rhombic crystal lying between the unit prism and the macropinacoid.

Wiktionary

1. n. A prism of an orthorhombic crystal between the macropinacoid and the unit prism; the corresponding pyramids are called macropyramids.

GNU Webster's 1913

1. n. (Crystallog.) A prism of an orthorhombic crystal between the macropinacoid and the unit prism; the corresponding pyramids are called macropyramids.