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definitions

dipyramid

[dahy-pir-uh-mid]
noun Crystallography.
  1. bipyramid.
Related formsdi·py·ram·i·dal [dahy-pi-ram-i-dl] /ˌdaɪ pɪˈræm ɪ dl/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018