celestial mechanics is a noun meaning "the branch of astronomy concerned with the application of Newton's laws of motion to the motions of heavenly bodies". It carries one recorded sense.
the branch of astronomy concerned with the application of Newton's laws of motion to the motions of heavenly bodies
Definitions, synonyms and semantic relations for celestial mechanics come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.