Bisphenoid definitions

Bisphenoid

1) Disphenoid
Found on https://www.crosswordclues.com/clue/bisphenoid

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bisphenoid

a tetrahedral form, each edge of which is bisected by the perpendicular bisecting the edge that does not intersect it. Also called
Found on https://www.infoplease.com/dictionary/bisphenoid

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