The Collaborative International Dictionary
Orthorhombic
Orthorhombic \Or`tho*rhom"bic\, a. [Ortho- + rhombic.] (Crystallog.) Noting the system of crystallization which has three unequal axes at right angles to each other; trimetric. See Crystallization.
Wiktionary
orthorhombic
a. (context crystallography English) having three unequal axes at right angles
Usage examples of "orthorhombic".
Again, it has certain quasi-living elements about it while retaining many of the peculiar qualities of a crystal of orthorhombic structure, perhaps having symmetry elements of Pmna or Pmm2.