bipyramid
[ bahy-pir-uh-mid ]
/ baɪˈpɪr ə mɪd /
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noun Crystallography.
a form symmetrical about a plane dividing it into two pyramids.
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Also called dipyramid.
OTHER WORDS FROM bipyramid
bi·py·ram·i·dal [bahy-pi-ram-i-dl], /ˌbaɪ pɪˈræm ɪ dl/, adjectiveWords nearby bipyramid
bipolar version, bipotentiality, bippy, biprism, bipropellant, bipyramid, biquadrate, biquadratic, biquarterly, biracial, biradial
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
Example sentences from the Web for bipyramid
Hexagonal bipyramid (fig. 70), bounded by twelve isosceles triangles each of which are equally inclined to two planes of symmetry.
The general form is bounded by twelve scalene triangles and is a ditrigonal bipyramid.
It may be considered as the hemihedral form of the ditetragonal bipyramid.
British Dictionary definitions for bipyramid
bipyramid
/ (ˌbaɪˈpɪrəmɪd) /
noun
a geometrical form consisting of two pyramids with a common polygonal base
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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