Variant of miasma
nounpl. miasmas or miasmata
- a vapor rising as from marshes or decomposing animal or vegetable matter, formerly supposed to poison and infect the air, causing malaria, etc.
- an unwholesome or befogging atmosphere, influence, etc.
Origin of miasmaModern Latin ; from Classical Greek pollution ; from miainein, to pollute ; from Indo-European base an unverified form mai- from source Old English mal, a spot