abyssal plain

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Related to Abyssal plane: abyssal floor

abyssal plain

A level tract of the deep ocean floor.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
References in periodicals archive ?
Situated in an area called the Madeira Abyssal Plane, the grid was spotted by aeronautical engineer Bernie Bamford as he browsed through Google Ocean.
The pounds 45.5 million ocean study centre, on the Humber estuary, tells the history of ocean life from the coral lagoons to the abyssal plane and boasts Europe's deepest aquarium.