Meaning of bisphenoid

bi•sphe•noid

Pronunciation: (bī-sfē'noid), [key]
— n. Crystall.
  1. a tetrahedral form, each edge of which is bisected by the perpendicular bisecting the edge that does not intersect it. Also called
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.