astronomy

definition: 
The branch of science which deals with celestial objects, space, and the physical universe as a whole.
sentence: 
He made a number of contributions to mathematics, physics and astronomy
difficulty: 
easy
toefl frequency: 
2
toefl classification: 
adverb: 
astronomically
adjective: 
astronomical
adverb sentence: 
Prices have increased astronomically.
adjective sentence: 
If you add all the money raised for cancer research each year, you will have an astronomical amount
verb: 
verb sentence: