An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

A combining form meaning "angled, angular," used in the formation of compound words. → heptagon, → hexagon, → polygon.

From Gk. gonia "angle," related to gony "knee;" L. genu "knee;" Mod.Pers. zânu "knee;" Av. žnav-, žnu- "knee;" Skt. janu-; PIE base *g(e)neu-.

From bar "side; breadth; breast," variant var (Mid.Pers. var "breast;" Av. vouru "wide, broad, extended" (vourucašāni- "looking far"), related to varah- "breast;" cf. Skt. urú- "wide, broad," úras- "breast;" Gk. eurus "wide, broad;" PIE base uer-, ueru-s"wide, broad"); -guš "corner, angle," Mid.Pers. gošak "corner."