chondroitin sulfate \chon*dro"it*in sul"fate\
   (k[o^]n*dr[=o]"[i^]*t[i^]n s[u^]l"f[=a]t), n. [Gr. cho`ndros
   cartilage.] (Physiol. Chem.)
   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.
   [PJC]