Breaking of bones is known as fracture.

Explanation

**Step-by-Step Solution:**

1. **Definition of Fracture**: A fracture is defined as the breaking of bones. This is a medical term used to describe any situation where the continuity of the bone is disrupted.

2. **Structure of Bones**: Bones are strong structures primarily made of calcium carbonate, which gives them their hardness and strength. This composition makes bones resilient, but they can still break under certain conditions.

3. **Causes of Fractures**: Fractures typically occur due to accidents or trauma. When a significant force is applied to the bone, it may exceed the bone's ability to withstand it, leading to a break.

4. **Types of Fractures**: There are different types of fractures. A simple fracture may involve a small crack in the bone, which can heal on its own. However, more severe fractures may completely break the bone, requiring medical intervention.

5. **Treatment of Fractures**: When a fracture occurs, the affected area is usually immobilized, often with a plaster cast. The individual is advised to rest for a period of 21 to 28 days to allow for healing. In cases of severe fractures, surgical intervention may be necessary.

6. **Conclusion**: The statement "Breaking of bones is known as fracture" is true. Fractures can vary in severity, and treatment depends on the type of fracture sustained.

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