astronomical
Webster's Unabridged Dictionary:
Top
As·tro·nom·ic·al
a. (-ĭ*kal)
[L. astronomicus, Gr. 'astronomiko`s: cf. F. astronomique.]
Of or pertaining to astronomy; in accordance with the methods or principles of astronomy. -- As·tro·nom·ic·al·ly, adv.
Astronomical clock. See under Clock. -- Astronomical day. See under Day. -- Astronomical fractions, Astronomical numbers. See under Sexagesimal.
