Adjective
Noting the system of crystallization which has three unequal axes at right angles to each other; trimetric. See Crystallization.
Source: Webster's dictionaryAmSi is a black solid isomorphic with LaSi, it has an orthorhombic crystal symmetry. Source: Internet
Dyar and Gunter, p. 22–23 Crystal structure and habit main seeAlso Topaz has a characteristic orthorhombic elongated crystal shape. Source: Internet
At 75 GPa it changes to a face centered orthorhombic structure. Source: Internet
Prehnite crystallizes in the orthorhombic crystal system, and most oftens forms as stalactitic or botryoidal aggregates, with only just the crests of small crystals showing any faces, which are almost always curved or composite. Source: Internet
Another phase of this oxide with orthorhombic symmetry has also been reported. Source: Internet
For triclinic, orthorhombic, and cubic crystal systems the axis designation is arbitrary and there is no principal axis. Source: Internet