astronomy

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astronomy radar astronomy radio astronomy X-ray astronomy

Main Entry: as�tron�o�my
Pronunciation: &-'strä-n&-mE
Function: noun
Inflected Form(s): plural -mies
Etymology: Middle English astronomie, from Anglo-French, from Latin astronomia, from Greek, from astr- + -nomia -nomy
: the study of objects and matter outside the earth's atmosphere and of their physical and chemical properties