Từ điển trực tuyến - Online Dictionary
radius
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English - Vietnamese Dictionary
radius /'reidjəs/
  • danh từ, số nhiều radii /'reidiai/
    • bán kính
      • radius of a circle: (toán học) bán kính của một vòng tròn
      • atomic radius: bán kính nguyên tử
    • vật hình tia; nan hoa (bánh xe)
    • phạm vi, vòng
      • within a radius of 5 kilometers from Hanoi: trong phạm vi cách Hà-nội 5 kilômét
      • within the radius of knowlegde: trong phạm vi hiểu biết
    • (giải phẫu) xương quay
    • (thực vật học) vành ngoài (của cụm hoa đầu); nhánh toả ra (của cụm hoa tán)
    • (kỹ thuật) tầm với (của cần trục...)
Concise Dictionary
radii|radiuses'reɪdɪəs
noun
+the length of a line segment between the center and circumference of a circle or sphere
+a straight line from the center to the perimeter of a circle (or from the center to the surface of a sphere)
+a circular region whose area is indicated by the length of its radius
+the outer and slightly shorter of the two bones of the human forearm
+support consisting of a radial member of a wheel joining the hub to the rim

Advanced English Dictionary
1 a straight line between the centre of a circle and any point on its outer edge; the length of this line
Compare: DIAMETER
2 a circular area that covers the distance mentioned from a central point: They deliver to within a 5-mile radius of the store. + Doctors wish to examine everyone living within a 10-mile radius of the factory.
3 (anatomy) the shorter bone of the two bones in the lower part of the arm between the elbow and the wrist, on the same side as the thumb
See also - ULNA


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