as·tro·nom·i·cal also as·tro·nom·ic 
/ˌæstrəˈnɑ:mɪkəl/ /ˌæstrəˈnɑ:mɪk/ adjective
/ˌæstrəˈnɑ:mɪkəl/ /ˌæstrəˈnɑ:mɪk/ adjective 1 : of or relating to astronomy
▪ astronomical research 2 : extremely large
▪ The cost of the office building was astronomical. ▪ We got an astronomical telephone bill this month.
▪ astronomical research
▪ The cost of the office building was astronomical. ▪ We got an astronomical telephone bill this month.
— as·tro·nom·i·cal·ly /ˌæstrəˈnɑ:mɪkli/ adverb
▪ The cost of health care has risen astronomically. ▪ an astronomically large amount of money
/ˌæstrəˈnɑ:mɪkli/ adverb ▪ The cost of health care has risen astronomically. ▪ an astronomically large amount of money
