Pronunciation: (dē-hī'drāt), [key]
—v., -drat•ed, -drat•ing.
1. to deprive (a chemical compound) of water or the elements of water.
2. to free (fruit, vegetables, etc.) from moisture for preservation; dry.
3. to remove water from (the body or a tissue).
4. to deprive of spirit, force, or meaning; render less interesting or effectual.
to lose water or moisture: Milk dehydrates easily.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.