Definition: Anhydration is described as the loss of water in the body, usually due to dehydration or electrolyte imbalance. It can be defined as: 1. Loss of water by losing it through sweating, vomiting or diarrhea. 2. The fluid lost from cells, primarily sodium and chloride, but also potassium. Detailed definition: - Loss of water by losing it through sweating, vomiting or diarrhea - This describes the process by which water is lost from the body's cells during these conditions. - The fluid lost from cells, particularly sodium and chloride, but also potassium. - It refers to the loss of water in the body due to dehydration, electrolyte imbalance, or other causes.