In general, the process
of drying up.
In botany: The process
of losing water which may occur after a hot, dry weather
during period of drought or chemicals. Drying up of;
In taxonomy: The process
of preserved herbarium plants by removing natural moisture.
In climatology: The
prolonged decrease or disappearance of water from a region via
evaporation, drainage, or outflow of water. Aridification, due
to prolonged drought, lasting many years or decades, sometimes
resulting in desertification.
A desiccant is a hygroscopic
substance or chemicals that induces or sustains such a state.