/ Dictionary / Index B bisphenoid: Meaning and Definition of Find definitions for: bi•sphe•noid Pronunciation: (bī-sfē'noid), [key] — n. Crystall. 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. bison bisque Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language