de·hy·drate 
(dē-hīdrāt′)
(dē-hīdrāt′)v. de·hy·drat·ed, de·hy·drat·ing, de·hy·drates
v.tr.
1. To remove water from; make anhydrous.
2. To preserve by removing water from (vegetables, for example). See Synonyms at dry.
3. To deplete the bodily fluids of: The hot weather dehydrated the runners.
v.intr.
To lose water or bodily fluids.