[as.tron.o.my] n, pl -mies [ME astronomie, fr. OF, fr. L astronomia, fr. Gk, fr. astr- + -nomia -nomy] (13c): the study of objects and matter outside the earth's atmosphere and of their physical and chemical properties
ASTRONOMY
Meaning of ASTRONOMY in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012