Dehydration is the excessive loss of body water.

Look up dehydration in Wiktionary, the free dictionary.

Dehydration or water loss may also refer to other cases of water loss/removal (sometimes colloquially):

• Drying, the removal of water through chemical or physical means
  • Desiccation, sometimes synonymous with drying, sometimes an extreme form of it
  • Food drying, food preservation by dehydration
• Dehydration reaction, a chemical reaction
• Dryness (medical) of skin, etc.

This disambiguation page lists articles associated with the title Dehydration.
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