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.

Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos. It uses mathematics, physics, and chemistry to explain their origin and their overall …

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

Dec 14, 2025 · astronomical (comparative more astronomical, superlative most astronomical) Drawings and pictures are more than mere ornaments in scientific discourse.

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

There are four meanings listed in OED's entry for the word astronomical, one of which is labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

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

Members of the Astronomical and Astrophysical Society of America pose for a group picture at their 11th meeting, held at the Harvard College Observatory in Cambridge.

4 days ago · From new exoplanetary neighbors and a weakening dark energy to the best evidence for life on Mars and an interstellar comet that's got everyone talking, 2025 has been jam-packed with …