'Miasm' definitions:

Definition of 'miasm'

From: WordNet
noun
An unwholesome atmosphere; "the novel spun a miasma of death and decay" [syn: miasma, miasm]
noun
Unhealthy vapors rising from the ground or other sources; "the miasma of the marshes"; "a miasma of cigar smoke" [syn: miasma, miasm]

Definition of 'Miasm'

From: GCIDE
  • Miasm \Mi"asm\, n. [Cf. F. miasme.] Miasma. [1913 Webster]