sphere 
/ˈsfiɚ/ noun
plural spheres /ˈsfiɚ/ noun [count] 1 a : a round object : globe
▪ a glass sphere
b geometry : a three-dimensional shape that looks like a ball
▪ All points on a sphere are the same distance from the center. — see picture at geometry 2 somewhat formal : an area of influence or activity
▪ Women at that time were confined to the domestic sphere. ▪ They recognize that jobs in the public/private sphere are valuable. ▪ The region has moved back and forth between Spanish and Portuguese spheres of influence. [=has been under the control or influence of Spain and Portugal at different times]
▪ a glass sphere
b geometry : a three-dimensional shape that looks like a ball
▪ All points on a sphere are the same distance from the center. — see picture at geometry
▪ Women at that time were confined to the domestic sphere. ▪ They recognize that jobs in the public/private sphere are valuable. ▪ The region has moved back and forth between Spanish and Portuguese spheres of influence. [=has been under the control or influence of Spain and Portugal at different times]
