French to English Dictionary (Dictionnaire Français-Anglais)

Aphotic zone

The portion of a lake or ocean where there is little or no sunlight, typically receiving less than 1% of surface sunlight and precluding photosynthesis.

Benthic Zone

The ecological region at the lowest level of a body of water such as an ocean, lake, or stream, including the sediment surface and some sub-surface layers.

Epipelagic Zone

The uppermost layer of the ocean, extending from the surface down to about 200 meters, where enough sunlight penetrates to allow photosynthesis.

Euphotic zone

The upper layer of a body of water where sufficient sunlight penetrates to allow photosynthesis to occur.

Pelagic zone

The open ocean water column that is neither close to the bottom nor near the shore, comprising the vast majority of habitable space in the world's oceans.

Photic Zone

The surface layer of an ocean or lake that is illuminated by sunlight, allowing photosynthesis to take place.

Submerged-zone

An area or region that is regularly or permanently covered under water, typically in marine, lacustrine, or tidal environments.

Upper-Pelagic-Zone

The upper layer of the pelagic zone in the ocean, typically extending from the surface to about 200 meters deep, where light is sufficient for photosynthesis.

Zaire

The former official name of the Democratic Republic of the Congo between 1971 and 1997 under the regime of Mobutu Sese Seko.

Zeal

Great energy or enthusiasm in pursuit of a cause or an objective.

Zealotism

The quality of being zealous, especially in pursuit of a cause or objective, often to an extreme degree.

Zenith

The highest point reached by a celestial or other object.