Search Result for "ochronosis": 
Wordnet 3.0

NOUN (1)

1. an accumulation of dark pigment in cartilage and other connective tissue; usually a symptom of alkaptonuria or phenol poisoning; 



WordNet (r) 3.0 (2006):

ochronosis
    n 1: an accumulation of dark pigment in cartilage and other
         connective tissue; usually a symptom of alkaptonuria or
         phenol poisoning