trigonal Definition

rhombohedral, symmetric, symmetrical, antiprism, bipyramid, bipyramidal, bipyramids, planar, trapezohedron, trisoctahedron, crystal system, monoclinic, orthorhombic, zirconoid, lanarkite, tetragonal, triclinic, point group, leucitoid, octahedral, monosymmetric, warwickite, orthodome, tetrahedral, holohedral, tyrolite, libethenite, clinorhombic, macrodome, clinodome, babingtonite, romeite, tysonite, macroprism, sagenitic, hexagonal, omphacite, crystalline, liroconite, sagenite, cubane, pucherite, macropinacoid, okenite, idrialite, chemical formula, cyclosilicate, stereospecific polymer, zinkenite, tetratomic, orthodiagonal, alstonite, macrodiagonal, clinodiagonal, fahlband, triploidite, prismatoid, hemihedral, rhombic, prismoid, perovskite, skutterudite, olivenite, xenocryst, belonite, dodecahedral, holocrystalline, hypocrystalline, wurtzite, quartz glass, crystal, transition element, dihexagonal, dimetric, coordination compound, melilite, berylloid, poikilitic, selenian, subsilicate, protosilicate, tetrabasic, sandwich compound, chloropal, kerolite, germanite, dative bond, condurrite, optical activity, domeykite, coordinate bond, quartzoid, saussurite, thortveitite, brachydiagonal, crystallographic, polyiamond, pyrosmalite, empirical formula, pentagonal,