Astron.
a part of the solar corona that appears dark on optical and x-ray images and is characterized by low temperature and low density.
[ 1970-75 ]
Astron.
a part of the solar corona that appears dark on optical and x-ray images and is characterized by low temperature and low density.
[ 1970-75 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012