D defs.my
Entry 1 sense Webster, 1913

Astronomical

/(-ĭ*kal)/ · As·tro·nom·ic·al · IPA /ˌæs.tɹəˈnɑm.ɪ.kəl/
01 a. Of or pertaining to astronomy; in accordance with the methods or principles of astronomy.
  1. 1.
    Of or pertaining to astronomy; in accordance with the methods or principles of astronomy.
Phrases & compounds
Astronomical clock — See under Clock.
Astronomical day — See under Day.
Astronomical fractions — See under Sexagesimal.