Enzymes which breakdown compounds without the involvement of water are called …………..

Explanation

**Step-by-Step Solution:**

1. **Understanding Enzyme Classification**: Enzymes are classified into six categories based on the type of reaction they catalyze. Among these categories, we have hydrolases and lyases.

2. **Defining Hydrolases**: Hydrolases are enzymes that catalyze the breakdown of compounds by adding water. This process involves the cleavage of bonds, such as peptide bonds or carbon-carbon bonds, through the incorporation of water.

3. **Defining Lyases**: In contrast, lyases are enzymes that break down compounds without the involvement of water. They remove groups from the substrate and often create double bonds or new functional groups in the process.

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