Particulate matter

noun

Definitions

Noun
  1. 1
    Any solid or liquid in a finely subdivided state, especially when considered as an atmospheric pollutant. countable, uncountable

    "Particulate matter air pollution contributes to lung cancer incidence in Europe."

  2. 2
    a small discrete mass of solid or liquid matter that remains individually dispersed in gas or liquid emissions (usually considered to be an atmospheric pollutant) wordnet

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