The process of exposing objects, often in a vacuum or air-tight chamber, to poisonous gases or vapour: to destroy insects, mildew or other life forms that may endanger them. The chemicals used in fumigation are often highly dangerous to humans.
A process by which the soil is sterilized from any insect, disease or weed, prior to the growing of a crop. This is usually done by covering it with mulch and injecting a Fumigant (gas or low-boiling liquid) into the soil.
Fumigation is a method of pest control that completely fills an area with gaseous pesticides to suffocate or poison the pests within. It is utilized for control of pests in buildings (structural fumigation), soil, grain, and produce, and is also used during processing of goods to be imported or exported to prevent transfer of exotic organisms.
Mixing downward of an elevated plume of air pollution (often embedded in a layer of statically stable air such as a temperature inversion) into a turbulent mixed layer that has grown into and entrained the plume. Compare looping, coning, fanning, entrainment zone.