Glossary D

The Environmental Glossary. Letter D +++ Popular Articles: 'Deposition', 'Degradation', 'Diesel'

A Depressurization is a condition that occurs when the air pressure inside a structure is lower that the air pressure outdoors.

A Depth of discharge is a measure of how much energy has been withdrawn from a battery, expressed as a percentage of full capacity.

A Dermal Exposure is Contact between a chemical and the skin.

A Dermal Absorption /Penetration is the process by which a chemical penetrates the skin and enters the body as an internal dose.

A Dermal Toxicity is the ability of a Pesticide or toxic chemical to poison people or animals by contact with the skin. (See: contact pesticide.)

A DES is a synthetic estrogen, diethylstilbestrol is used as a growth stimulant in food animals. Residues in Meat are thought to be carcinogenic.

A Desalination is [Desalinization] (1) Removing salts from ocean or Brackish water by using various technologies. (2) Removal of salts from soil by artificial means, usually leaching.

A Desertification is the progressive destruction or DEGRADATION of existing vegetative Cover to form desert. This can occur due to overgrazing, deforestation, drought, and the burning

A Desiccant is a chemical Agent that absorbs moisture; some Desiccants are

A Design Capacity is the average daily flow that a treatment plant or other facility is designed to accommodate.

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