An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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particulate matter (PM)
  ماده‌ی ِ پارولی  
mâdde-ye pâruli
Fr.: particule en suspension  

Meteorology: A complex → mixture of → microscopic → particles and → liquid droplets suspended in the → atmosphere, especially pollutants.

See also: → particulate; → matter.