The meaning of ASTRONOMICAL is of or relating to astronomy. How to use astronomical in a sentence.

ASTRONOMICAL definition: 1. connected with astronomy: 2. An astronomical amount is extremely large: 3. connected with…. Learn more.

Babylonian astronomy was an early astronomical instrument. Its use of sexagesimals (e.g. 12, 24, 60, 360) is still being used today through having been broadly adopted for timekeeping and astrometry.

Astronomical definition: of, relating to, or connected with astronomy.. See examples of ASTRONOMICAL used in a sentence.

1. Of or relating to astronomy. 2. Of enormous magnitude; immense: an astronomical increase in the deficit.

If you describe an amount, especially the cost of something as astronomical, you are emphasizing that it is very large indeed.

Oct 17, 2025 · astronomical (comparative more astronomical, superlative most astronomical) Drawings and pictures are more than mere ornaments in scientific discourse.

Check out our astronomy calendar for 2025 into 2026.

Nov 14, 2025 · astronomy, science that encompasses the study of all extraterrestrial objects and phenomena.

Definition of astronomical adjective in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.