siderosis

from WordNet (r) 3.0 (2006)

siderosis
    n 1: fibrosis of the lung caused by iron dust; occurs among
         welders and other metal workers

from The Collaborative International Dictionary of English v.0.48

Siderosis \Sid`e*ro"sis\, n.[NL., fr. Gr. ??? iron.] (Med.)
   A sort of pneumonia occuring in iron workers, produced by the
   inhalation of particles of iron.
   [1913 Webster]