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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.

Origin of bipyramid

bi·py·ram·i·dal [bahy-pi-ram-i-dl], /ˌbaɪ pɪˈræm ɪ dl/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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