dead zone


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dead zone

n.
1. An area in a body of water where levels of dissolved oxygen are too low to sustain aquatic life, usually resulting from the growth and subsequent decomposition of algae brought about by excess nutrients (as from polluted runoff).
2. See dead spot.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

dead zone

n
1. an area of water that cannot support marine life, being virtually devoid of oxygen due to the presence of nitrates that stimulate algae growth
2. an area where a mobile phone does not receive a signal
3. any area where something does not exist or prosper: a dead zone for cinemas.
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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References in periodicals archive ?
The National Oceanic and Atmospheric Administration predicted that this year's dead zone will be roughly the size of Massachusetts.
A hypoxic zone, more popularly known as a dead zone, is an area in
In DEAD ZONE, Henson is one of the "seers" from his poem of that title, who are "singing themselves from the misery / of the world ...
The dead zone was confirmed by underwater robots called Seagliders - which were able to collect data in areas of water previously inaccessible due to the piracy and geopolitical tensions.
According to the team leader Bastien Queste from UEA's School of Environmental Sciences, the situation in this part of the Arabian Sea, which is the largest and thickest dead zone in the world, has been made worse by climate change, "as warmer waters hold less oxygen, and by fertiliser and sewage running off the land into the seas."
Tong, "Adaptive fuzzy identification and control for a class of nonlinear pure-feedback mimo systems with unknown dead zones," IEEE Transactions on Fuzzy Systems, vol.
Tao, "Adaptive fault-tolerant control of uncertain nonlinear large-scale systems with unknown dead zone, " IEEE Transactions on Cybernetics, vol.
Motivated by the above discussion, we study the adaptive neural control problem of a class of discrete-time switched nonlinear systems with dead zone inputs under arbitrary switching signals.
In the dead zone, junior managers will not say they like a piece of creative work until they receive some sign from managers above them that it's OK to like it.
The researchers show how the millions of green algae living within the cells of Noctiluca allow it to exploit an oxygen-starved dead zone the size of Texas.
Last year, the IRS let employers in SHOP dead zones to use the tax credit as long as those employers offered coverage that would have qualified for the Section 45R tax credit before Jan.