Definition of orthorhombic
i. Any mineral crystallizing with orthorhombic symmetry.
ii. See: orthorhombic system
In crystallography, that crystallographic system whose forms exhibit three unequal mutually perpendicular axes.
Synonym of: prismatic system, rhombic system, orthorhombic
Ref: Fay
See: https://www.mindat.org/article.php/2793/Crystallography%3A+The+Orthorhombic+System
Orthorhombic crystal: D
ii. See: orthorhombic system
In crystallography, that crystallographic system whose forms exhibit three unequal mutually perpendicular axes.
Synonym of: prismatic system, rhombic system, orthorhombic
Ref: Fay
See: https://www.mindat.org/article.php/2793/Crystallography%3A+The+Orthorhombic+System
Orthorhombic crystal: D
Styggedalsgangen, Tråk, Bamble, Telemark, Norway