orthopinacoid


From The Collaborative International Dictionary of English v.0.48:

Orthopinacoid \Or`tho*pin"a*coid\, n. [Ortho- + pinacoid.]
   (Crystallog.)
   A name given to the two planes in the monoclinic system which
   are parallel to the vertical and orthodiagonal axes.
   [1913 Webster] Orthopnoea
Feedback Form