pneumomelanosis

pneu·mo·mel·a·no·sis

(nū'mō-mel'ă-nō'sis), Blackening of the lung tissue from the inhalation of coal dust or other black particles.
See also: anthracosis. Synonym(s): pneumonomelanosis [G. pneumōn, lung, + melanosis, a becoming black]

pneumomelanosis

(nu?mo-mel-an-o'sis) [Gr. pneumon, lung, + melano, black, + osis, condition] Pigmentation of the lung seen in pneumoconiosis. Synonym: pneumonomelanosis