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Any of several sulfated glycosaminoglycans that are a major constituent of various connective tissues, especially blood vessels, bone, and cartilage, used as an over-the-counter dietary supplement alone or in combination with glucosamine for joint pain in arthritis.
[From chondroitic acid, an acid occurring in cartilage.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
1. an element that is present in cartilage
2. (Pharmacology) an additive that can be taken to improve movement and elasticity of joints
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014