Glossary D

The Environmental Glossary. Letter D +++ Popular Articles: 'Development', 'Disease', 'Distribution'

A Deflocculating Agent is a material added to a suspension to prevent settling.

A Defluoridation is the removal of excess flouride in drinking water to prevent the staining of teeth.

A Defoliant is an Herbicide that removes leaves from trees and growing plants.

Deutsch: Abholzung / Español: Deforestación / Português: Desflorestação / Français: Déforestation / Italiano: Deforestazione /

A Deforest ation is Those practices or processes that result in the change of forested lands to non-forest uses.

A Degasification is a water treatment that removes dissolved gases from the water.

Degradable refers to a substance that can be degraded, decomposed or otherwise broken down into a more simple chemical structure over time via chemical or biological means.

Deutsch: Umweltverschlechterung / Español: Degradación Ambiental / Português: Degradação Ambiental / Français: Dégradation de l'Environnement / Italiano: Degradazione Ambientale /

A Degradation is the sum of natural processes which cause a decrease in PCB mass (weight, not quantity) by either Dechlorination or outright destruction of PCB molecules.

A Degree-Day is a rough measure used to estimate the amount of heating required in a given area; is defined as the difference between the mean daily temperature and 65 degrees Fahrenheit.

A Deionized water is Common industrial water used to remove contaminants from Products and equipment (Brown and Caldwell, 1

A Delegated State is a state (or other governmental entity such as a tribal government) that has received authority to administer an Environmental regulatory program in lieu of a federal counterpart.