bipyramidal

Adjective

bi=py=ram=i=dal

CIDE DICTIONARY

bipyramidal, a. [Pref. bi- + pyramidal.].

Consisting of two pyramids placed base to base; having a pyramid at each of the extremities of a prism, as in quartz crystals. [1913 Webster]

For further exploring for "bipyramidal" in Webster Dictionary Online

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