Doubly prismatic; pertaining to two prismatic systems: see quot. 1821.
ΚΠ
1821 R. JamesonMan. Mineral. Introd. 10 Cleavage is said to be diprismatic, if its planes have the direction of the faces of a vertical, and at the same time of a horizontal prism.
This entry has not yet been fully updated (first published 1896; most recently modified version published online June 2019).