Medicine: Too little amount
of water in body tissue accompanied usually by an imbalance in the essential electrolytes such as chloride, potassium, and sodium. It is caused often by inadequate water intake
and/or excessive removal
of water due to diarrhea, sweating, or vomiting. Its symptoms include, coated tongue, dry mucous membrane, little or no passage of urine, poor skin
resiliency (in young bodies), and confused state of mind.