HEVELIAN HALO


Meaning of HEVELIAN HALO in English

/heuh vay"lee euhn/

a faint white halo with an angular radius of 90° that is occasionally seen around the sun or the moon, thought to be caused by the reflection and refraction of sunlight by ice crystals.

[ after J. HEVELIUS; see -IAN ]

Random House Webster's Unabridged English dictionary.      Полный английский словарь Вебстер - Random House .