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A reduction or cutback in electric power, especially as a result of a shortage, a mechanical failure, or overuse by consumers.

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.


1. (Electrical Engineering) a dimming or reduction in the use of electric lights in a city, esp to conserve electric power or as a defensive precaution in wartime
2. (Electrical Engineering) a temporary reduction in electrical power. Compare blackout3
3. (Computer Science) a temporary slowing down of the workings of the internet caused when too many users attempt to access it at the same time
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014



any curtailment of electric power, esp. a voltage reduction to prevent a blackout.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.brownout - darkness resulting from the extinction of lights (as in a city invisible to enemy aircraft)brownout - darkness resulting from the extinction of lights (as in a city invisible to enemy aircraft)
aircraft - a vehicle that can fly
dark, darkness - absence of light or illumination
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Manila Electric Corporation (Meralco) announced Sunday that several parts of the country will experience brownouts because of scheduled maintenance work from August 5-11.
While metropolitan areas enjoy stable electricity, the DOE estimates that 12 million Filipinos still lack electricity and millions more in the provinces endure regular brownouts.
ROTATIONAL brownouts were experienced in Luzon on Tuesday after the grid was placed on red alert notice, the 11th time since March this year.
Rotational brownouts were experienced in some parts of Sorsogon province for the past two days because of the low capacity of power in the Luzon grid.
LAHORE -- Gas brownouts in various localities of Lahore forced the residents to protest against the Sui Northern Gas Pipelines Limited (SNGPL) for not taking measures to resolve the issue.
* GAR President Tom Raffy was recently interviewed by a southern California-based newspaper on how his firm has prepped for blackout or brownouts. According to Raffy, GAR is prepared to shut down its chiller for a day, if necessary.
Surges, voltage dips (brownouts) and rapid cycling can send your home's A/C system to an early grave.
“People in Mindanao either suffer from the full force and effect of the tropical heat due to brownouts, or the high energy cost of running air-conditioning units,” said Nati, an Italian architect who designed and built his green Primavera Residences condominium in Cagayan de Oro.
It was these brownouts, not some computer virus or sleazy hacker that had been causing my computer problems for the last few months.
Cotabato Electric Co-operative (Cotelco) officials said they are now implementing rotating brownouts in north Cotabato due to repairs and maintenance shutdown of power plants, including hydropower facilities in Lanao del Norte and Misamis Oriental.
BAE develops technology to help pilots see in brownouts. BAE Systems-UK has developed a system to help helicopter pilots see better in brownout conditions.