trigonal system, one of the structural categories to which crystalline solids can be assigned. The trigonal system is sometimes considered to be a subdivision of the hexagonal system.

In crystallography, the hexagonal crystal family is one of the six crystal families, which includes two crystal systems (hexagonal and trigonal) and two lattice systems (hexagonal and …

The meaning of TRIGONAL is of, relating to, or being the division of the hexagonal crystal system or the forms belonging to it characterized by a vertical axis of threefold symmetry.

Nov 24, 2022 · There are 7 crystal systems in 3D, which directly connect to 32 point groups when adding mirror planes and inversion. The 7 crystal systems are: Cubic, Hexagonal, Tetragonal, …

TRIGONAL definition: of, relating to, or shaped like a triangle; having three angles; triangular. See examples of trigonal used in a sentence.

While commonly confused, the trigonal crystal system and the rhombohedral lattice system are not equivalent (see section crystal systems below). In particular, there are crystals that have …

Trigonal refers to anything that has three angles or three vertices, typically used in geometry and crystallography to describe shapes or structures that possess three-fold symmetry.

While the other systems use three crystallographic axes, the hexagonal and trigonal systems use four axes. The major or principle three fold or six fold axis is, of course, one of the axes. The …

Aug 19, 2025 · Adjective trigonal (comparative more trigonal, superlative most trigonal) Having three angles and three sides, triangular. (crystallography) Of or pertaining to a crystal system …

Three groups of electrons around an atom X, always give a trigonal planar arrangement around the central atom X-. X-ray diffraction studies show it has the expected trigonal bipyramidal …