An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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non-baryonic matter
  مادّه‌ی ِ ناباریونی  
mâdde-ye nâbâriyoni (#)
Fr.: matière non-baryonique  

Matter that, unlike the ordinary matter, is not made of baryons (including the neutrons and protons). It is proposed as a possible constituent of dark matter.

See also: → non-; → baryonic matter.