plane of symmetry
91Topicity — Main article: stereochemistry In chemistry, topicity is the stereochemical relationship of substituents relative to the structure to which they are attached. Depending on the relationship, such groups can be heterotopic, homotopic, enantiotopic,… …
92morphology — morphologic /mawr feuh loj ik/, morphological, adj. morphologically, adv. morphologist, n. /mawr fol euh jee/, n. 1. the branch of biology dealing with the form and structure of organisms. 2. the form and structure of an organism considered as a… …
93Rhombohedron — In geometry, a rhombohedron is a three dimensional figure like a cube, except that its faces are not squares but rhombi. It is a special case of a parallelepiped where all edges are the same length.In general the rhombohedron can have three types …
94Desymmetrization — in stereochemistry is the modification of a molecule that results in the loss of one or more symmetry elements. An important application involves the introduction of chirality. Formally, such conversion require the loss of an improper axis of… …
95Crystallographic image processing — (CIP) is a set of methods for determining the atomic structure of crystalline matter from high resolution electron microscopy (HREM) images obtained in a transmission electron microscope (TEM). The term was created in the research group of Sven… …
96symmetricalness — noun (mathematics) an attribute of a shape or relation; exact reflection of form on opposite sides of a dividing line or plane • Syn: ↑symmetry, ↑correspondence, ↑balance • Ant: ↑asymmetry (for: ↑sy …
97Dihydrogen cation — The hydrogen molecular ion, dihydrogen cation, or H2+, is the simplest molecular ion. It is composed of two positively charged protons and one negatively charged electron, and can be formed from ionization of a neutral hydrogen molecule. It is of …
98Lamiales — ▪ plant order Introduction mint order of flowering plants, including 23 families and more than 23,000 species. The main families in the order are Lamiaceae, Verbenaceae, Plantaginaceae, Scrophulariaceae, Orobanachaceae, Acanthaceae,… …
99form — formable, adj. formably, adv. /fawrm/, n. 1. external appearance of a clearly defined area, as distinguished from color or material; configuration: a triangular form. 2. the shape of a thing or person. 3. a body, esp. that of a human being. 4. a… …
100Brachiopod — Taxobox name = Brachiopoda fossil range = Cambrian Recent image width = 250px image caption = Living brachiopods regnum = Animalia phylum = Brachiopoda phylum authority = Duméril, 1806 subdivision ranks = Subphyla and classes subdivision = See… …
