diad symmetry
1Crystal structure — In mineralogy and crystallography, crystal structure is a unique arrangement of atoms or molecules in a crystalline liquid or solid. A crystal structure is composed of a pattern, a set of atoms arranged in a particular way, and a lattice… …
2Disphenoid — The tetragonal and digonal disphenoids can be positioned inside a cuboid bisecting two opposite faces. All four faces are isosceles triangles. Both have four equal edges going around the sides. The digonal has two sets of isosceles triangle faces …
3Diethyl azodicarboxylate — Diethyl azodicarboxylate …
4dihexagonal-dipyramidal — adjective : of or characterized by the symmetry of the class of crystals in the hexagonal system having a vertical hexad axis, six horizontal diad axes, six vertical planes, and a horizontal plane of symmetry …
5diploidal — dəˈplȯidəl, (ˈ)di|p adjective Etymology: diploid (I) + al : belonging to or characterized by the symmetry of the class of isometric crystals having diad axes parallel to the crystallographic axes, triad axes in the directions of the cube body… …
6digonal — (ˈ)dī|gōnəl adjective Etymology: di + Greek gōnia angle + English al of an axis of symmetry of a crystal : twofold, diad …
