Glossary E

The Environmental Glossary. Letter E +++ Popular Articles: 'Environment', 'Ecosystem', 'Energy'

Deutsch: Verfall / Español: Caducidad / Português: Expiração / Français: Expiration / Italiano: Scadenza

Expiration in the environmental context refers to the end of a product's or material's useful life, after which it is no longer effective, safe, or suitable for use. This term is often associated with the shelf life of chemical substances, food products, pharmaceuticals, and materials used in environmental applications. It can also pertain to permits, licenses, and agreements related to environmental activities that have a finite duration.

Español: Exhalación / Português: Expiração / Français: Souffle
Exhalation (or expiration) is the flow of the respiratory current out of the organism. In humans it is the movement of air out of the bronchial tubes, through the airways, to the external environment during breathing.

An Exponential growth is Growth in which some quantity, such as population size, increases by a constant percentage of the whole during each year or other time period; when the increase in quantity over time is plotted, this type of growth yields a curve shaped like the letter J.

Deutsch: Belastung / Español: Exposición / Português: Exposição / Français: Exposition / Italiano: Esposizione /

An Exposure is coming into contact with a substance through inhalation, ingestion, or direct contact with the skin; may be acute or chronic

An exposure is a term relating to the amount of ionizing radiation that strikes a living or inanimate material. This is a general definition. In health physics, exposure is specifically defined as a measure of ionization in air caused by x-ray or gamma radiation only.

An Exposure assessment: is Identifying the ways in which chemicals may Reach individuals (e.g., by breathing); estimating how much of a chemical an individual is likely to be exposed

exposure indicator (Deleted term 1993. See is stressor

An Exposure time is the length of time a specific mail-in device must be in contact with radon or radon Decay Products to get an accurate radon measurement.

An extensive resource is a resource covering a large area that is not ecologically integrated and is not a collection of natural units, for example, large marshes or rangelands.

Deutsch: Aussterben / Español: Extinción / Português: Extinção / Français: Extinction / Italiano: Estinzione

Extinction in the environment context refers to the permanent loss of a species, subspecies, or group of organisms, meaning that no living members of that group exist anywhere on Earth. Extinction occurs when a species is unable to survive in its environment or evolve to adapt to changes in its environment, often due to factors like habitat destruction, climate change, pollution, overexploitation, and invasive species. The concept of extinction is central to conservation biology, highlighting the urgency of preserving biodiversity and maintaining ecosystem services.

An Extra-Label Drug Use is an Antibiotic or other chemical used on the advice of a veterinarian in a dosage, route of administration, for a different disease or in some other manner not included on the approved printed package label.