hydroxyproline

from WordNet (r) 3.0 (2006)

hydroxyproline
    n 1: a crystalline amino acid obtained from gelatin or collagen

from The Collaborative International Dictionary of English v.0.48

hydroxyproline \hydroxyproline\ n.
   A crystalline amino acid ({C5H9NO3}), a hydroxylated proline,
   obtained by hydrolysis of gelatin or collagen. Chemically it
   is 4-hydroxy-L-proline. It is classified as nonessential for
   growth in rats.
   [WordNet 1.5 +PJC]