An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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ionization-bounded H II region
  ناحیه‌ی ِ II H‌ی ِ یونش‌کران‌مند  
nâhiye-ye H II-e yoneš-karânmand
Fr.: région H II bornée par ionisation  

An H II region whose → exciting star(s) do not have enough → Lyman continuum photons to ionize the whole region. → density-bounded H II region.

See also: → ionization; → bounded; → H II region.