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radius
B1
noun
Sử dụng:
90%
circle line, center line
Tương ứng: circle line, center line
Phát âm: /ˈreɪdiəs/
Ý nghĩa: A straight line from the center of a circle or sphere to its edge or surface.

This meaning is about geometry. The radius is the distance from the middle point of a circle to its edge. It helps us measure the size of circles and spheres.

The radius of the circle is five meters.

Measure the radius to draw the circle.

2
B2
noun
Sử dụng:
70%
forearm bone
Tương ứng: forearm bone
Phát âm: /ˈreɪdiəs/
Ý nghĩa: One of the two long bones in the forearm, between the elbow and the wrist.

This meaning refers to anatomy. The radius is a bone in your arm. It is one of the two bones that connect your elbow to your wrist.

He broke his radius in the fall.

The radius is next to the ulna in the arm.

3
B1
noun
Sử dụng:
80%
range, area
Tương ứng: range, area
Phát âm: /ˈreɪdiəs/
Ý nghĩa: A range or area measured outward from a central point.

Here, radius means the distance around a center point. It is often used to describe an area or zone nearby, like delivery or danger area.

The shop delivers within a five-mile radius.

Stay inside the safe radius during the game.

4
C1
noun
Sử dụng:
40%
network reach
Tương ứng: network reach
Phát âm: /ˈreɪdiəs/
Ý nghĩa: In graph theory or network science, the minimum distance from a central node to the farthest node in a network.

In computer science and mathematics, radius describes how far the farthest point is from the center in a network. It shows how large or small a network is from its center.

The network’s radius measures the farthest node.

Radius helps find the center in a network graph.

5
C1
noun
Sử dụng:
35%
atomic size
Tương ứng: atomic size
Phát âm: /ˈreɪdiəs/
Ý nghĩa: In physics, the distance from the center of an atom or nucleus to the outer edge of its electrons or protons.

This is a scientific meaning in physics and chemistry. Atomic radius means how big an atom is, measured from its center to its outer edge of particles.

The atomic radius tells the atom’s size.

Radius helps show how big an atom is.

6
C1
noun
Sử dụng:
25%
lever arm
Tương ứng: lever arm
Phát âm: /ˈreɪdiəs/
Ý nghĩa: In medicine, an adjustable lever or device arm that rotates around a fixed point to control movement.

In mechanics and medicine, radius can mean a part of a tool or body that moves around a fixed point, like a lever. It helps control movement by changing its position.

The radius of the machine controls movement.

Adjust the radius to change the angle.

radius
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