radius

noun

support consisting of a radial member of a wheel joining the hub to the rim
ハブとリムをつなぐホイールの半径部の一部で成る支え
the length of a line segment between the center and circumference of a circle or sphere
円または球の中心と円周の間の線分の長さ
the outer and slightly shorter of the two bones of the human forearm
人の前腕の2つの骨のうち外側のやや短い方の骨
a circular region whose area is indicated by the length of its radius
半径の長さで示される円形の区域
- they located it within a radius of 2 miles
  彼らは半径2マイル以内にそれを置いた
a straight line from the center to the perimeter of a circle (or from the center to the surface of a sphere)
円の中心から円周まで（または球の中心から球面まで）の直線