What do you understand by monounsaturated fatty acid?

Explanation

### Step-by-Step Solution:

1. **Understanding the Term "Monounsaturated"**:
- The prefix "mono-" means "one". This indicates that there is one double bond present in the fatty acid chain.

2. **Defining Unsaturated Fatty Acids**:
- Unsaturated fatty acids are those that contain one or more double or triple bonds between carbon atoms. In contrast, saturated fatty acids have no double bonds and are fully saturated with hydrogen atoms.

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