What do you mean by a disaccharide?

Explanation

### Step-by-Step Solution:

1. **Definition of Disaccharide**: A disaccharide is a type of carbohydrate that consists of two monosaccharide units. The prefix "di-" means two, and "saccharide" refers to sugar. Therefore, disaccharides are often referred to as "double sugars."

2. **Composition**: Disaccharides are formed when two monosaccharides undergo a condensation reaction, where a molecule of water is removed, resulting in the formation of a glycosidic bond between the two sugar molecules.

3. **Examples of Disaccharides**: Common examples of disaccharides include:
- **Sucrose**: Composed of glucose and fructose.
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