astronomy

as·tron·o·my

noun \ə-ˈsträ-nə-mē\

plural as·tron·o·mies

Definition of ASTRONOMY

: the study of objects and matter outside the earth's atmosphere and of their physical and chemical properties

Origin of ASTRONOMY

Middle English astronomie, from Anglo-French, from Latin astronomia, from Greek, from astr- + -nomia -nomy

First Known Use: 13th century

Other Astronomy Terms

gibbous, nadir, nebulous, penumbra, retrograde, sidereal, syzygy, wane, wax, zenith

Rhymes with ASTRONOMY

agronomy, antonymy, autonomy, economy, eponymy, gastronomy, metonymy, synonymy, taphonomy, taxonomy, toponymy