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chondroitin

[kuh n-droh-i-tin, -droit-n]
noun Biochemistry.
  1. a sulfated glycosaminoglycan, C6H13NO5, occurring in various tissues, as cartilage and tendons: sold as a dietary supplement in the treatment of joint pain.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018