1 : of or relating to astronomy. 2 : extremely or unbelievably large. Other Words from astronomical. astronomically adverb.

Is astronomically a real word?

astronomically adverb (LARGE)

by a very large amount: Oil prices have risen astronomically since the early 70s.

What does astronomically expensive mean?

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