# miasma

> English word · Noun · IPA /miˈæzmə/ · frequency rank #69,247

## Definitions
1. A noxious atmosphere or emanation once thought to originate from swamps and waste, and to cause disease.
2. A noxious atmosphere or influence, an ominous environment.

## Etymology
First attested in 1665. From Ancient Greek μίασμα (míasma, “stain; pollution”).

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/miasma