释义 |
bipyramid
bipyramid (ˌbaɪˈpɪrəmɪd) n (Mathematics) a geometrical form consisting of two pyramids with a common polygonal basebipyramid
bipyramid[¦bī¦pir·ə‚mid] (crystallography) A crystal having the form of two pyramids that meet at a plane of symmetry. Also known as dipyramid. |