chondroitin sulfate /(kŏn*drō"ĭ*tĭn sŭl"fāt)/

chon·dro·it·in sul·fate

chondroitin sulfate

n.
  1. A colorless, amorphous, mucopolysaccharide having N-acetyl chondrosine as the repeating unit with one sulfate group per disaccharide. Typical preparations have a molecular weight of about 50,000. Preparations are sold over-the-counter, often referred to as chondroitin, with the putative ability to relieve pain in joints and assist joint cartilage growth or regeneration; such claims are, as of 2001, yet unproven. (Physiol. Chem.)