To remove water from a substance.

Dehydration of crude oil is normally accomplished by treating with emulsion breakers.

The water vapor in natural gas must be removed to meet pipeline requirements; a typical maximum allowable water vapor content is 7 pounds per million cubic feet per day.

A device, similar to a pumpdown ball, used to manipulate hydraulically operated downhole tools.

The liquefaction of a solid substance due to the solution of the solid by absorption of moisture from the air.