noting or pertaining to a system of crystallization characterized by three unequal axes intersecting at right angles; rhombic; trimetric.
Origin of orthorhombic
Related formspseu·do·or·tho·rhom·bic, adjective
First recorded in 1865–70; ortho-
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for orthorhombic
Historical Examples of orthorhombic
Certain pyroxenes also crystallize in the orthorhombic system.
It crystallizes in the orthorhombic system, and the crystals are either prismatic or acicular in habit.
It crystallizes in the orthorhombic system, and has three directions of perfect cleavage parallel to the three planes of symmetry.
It is not isomorphous with the orthorhombic barium and strontium sulphates, as might be expected from the chemical formulae.
It is of less frequent occurrence in nature than copper-glance, the orthorhombic cuprous sulphide.
British Dictionary definitions for orthorhombic
crystallog relating to the crystal system characterized by three mutually perpendicular unequal axesAlso: rhombic, trimetric
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Relating to a crystal having three axes of different lengths intersecting at right angles. The mineral topaz has orthorhombic crystals. See illustration at crystal.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.