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bipyramid

[bahy-pir-uh-mid] /baɪˈpɪr ə mɪd/
noun, Crystallography.
1.
a form symmetrical about a plane dividing it into two pyramids.
Also called dipyramid.
Origin of bipyramid
Related forms
bipyramidal
[bahy-pi-ram-i-dl] /ˌbaɪ pɪˈræm ɪ dl/ (Show IPA),
adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for bipyramid

bipyramid

/ˌbaɪˈpɪrəmɪd/
noun
1.
a geometrical form consisting of two pyramids with a common polygonal base
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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