An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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diffuse interstellar medium
  مدیم ِ اندر‌اختری ِ پخشیده  
madim-e andaraxtari-ye paxšidé
Fr.: milieu interstellaire diffus  

The interstellar matter outside condensed molecular clouds.
Diffuse interstellar medium consists of a hot intercloud medium, a warm intercloud medium, and a cold neutral medium with hydrogen atom densities nH ~ 0.003, ~ 0.25, and ~ 40 cm-3, and mean gas → kinetic temperatures Tk ~ 5 x 105, ~ 104, and 80 K, respectively.

See also: → diffuse; → interstellar; → medium.