noun
Usage: usually capitalized B
Etymology: F.W. Bessel + English -ian
: mathematical-astronomical data employed by Bessel for facilitating precise prediction of a solar eclipse at any place on the earth
noun
Usage: usually capitalized B
Etymology: F.W. Bessel + English -ian
: mathematical-astronomical data employed by Bessel for facilitating precise prediction of a solar eclipse at any place on the earth
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012