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bipyramid

[ bahy-pir-uh-mid ]
/ baɪˈpɪr ə mɪd /

noun Crystallography.

a form symmetrical about a plane dividing it into two pyramids.

Nearby words

  1. bipolarity,
  2. bipotentiality,
  3. bippy,
  4. biprism,
  5. bipropellant,
  6. biquadrate,
  7. biquadratic,
  8. biquarterly,
  9. biracial,
  10. biradial

Origin of bipyramid

bi-1 + pyramid
Also called dipyramid.
Related formsbi·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. 2019
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