球体

(1)an object with a spherical shape; "a ball of fire"

(2)球の形をした物体

(3)a three-dimensional closed surface such that every point on the surface is equidistant from the center

(4)表面上の点が中心からすべて等距離にある3次元の閉じた面

(5)any spherically shaped artifact

(6)球形をした人工物