siderosis

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Chronic inflammation of the lungs caused by excessive inhalation of dust containing iron salts or particles.

Century Dictionary and Cyclopedia

1. n. Pneumonoconiosis in which the particles are metallic, especially iron.
2. n. A deposition of iron pigment in any of the tissues of the body.

Wiktionary

1. n. medicine A form of pneumoconiosis caused by the inhalation of iron dust
2. n. medicine The accumulation of hemosiderin in various organs of the body by people with a diet rich in iron

GNU Webster's 1913

1. n. (Med.) A sort of pneumonia occuring in iron workers, produced by the inhalation of particles of iron.

WordNet 3.0

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