orthorhombic definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
designating or of a crystal system having three axes of unequal length, each of which intersects at right angles with the others
Origin: ortho- plush rhombic
orthorhombic definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Of or relating to a crystalline structure of three mutually perpendicular axes of different length.
orthorhombic - Science Definition
Relating to a crystal having three axes of different lengths intersecting at right angles. The mineral topaz has orthorhombic crystals. See illustration at crystal.