Division by zero is not defined.

Answer

### Step-by-Step Solution:

1. **Understanding Division**: Division is the process of determining how many times one number (the divisor) is contained within another number (the dividend).

2. **Setting Up the Problem**: Let's take a number \( x \) and try to divide it by 0. We can express this as \( \frac{x}{0} \).

3. **Exploring the Concept of Division**: When we divide \( x \) by 0, we are essentially trying to find a number \( y \) such that \( 0 \times y = x \).

4. **Analyzing the Equation**: If we set up the equation \( 0 \times y = x \), we notice that no matter what value \( y \) takes, the left side will always equal 0 because any number multiplied by 0 is 0. Therefore, there is no value of \( y \) that can satisfy this equation when \( x \) is not 0.

5. **Conclusion on Division by Zero**: Since there is no number \( y \) that can satisfy the equation \( 0 \times y = x \) when \( x \) is not 0, we conclude that division by zero is not defined.

6. **Final Statement**: Thus, the statement "Division by zero is not defined" is true.