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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.


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



any curtailment of electric power, esp. a voltage reduction to prevent a blackout.
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
References in periodicals archive ?
The outages are also disrupting the ongoing registration of new voters in Kidapawan City, which is being plagued by up to six hours of brownouts daily.
Evaluation Kits featuring AutoCell(TM) provide a Wi-Fi world without performance brownouts, neighboring interference and administrative headaches
DAVAO CITY -- Not even a highly polluting source of electricity, coal, can be relied on to ease the shortage of power in Mindanao, parts of which are currently suffering up to six hours of rotating brownouts.
of Maynardville, TN to acquire the exclusive distribution rights to a line of breakthrough electricity controllers designed to provide significant energy savings and prevent brownouts and blackouts.
WHILE millions suffer from daily brownouts, the town of Paluan in Occidental Mindoro is now completely brownout-free.
An official of the Department of Energy (DOE) has ruled out the possibility of having brownouts during the summer months this year.
GAR President Tom Raffy was recently interviewed by a southern California-based newspaper on how his firm has prepped for blackout or brownouts.
Romeo Montenegro, communications director of the Mindanao Development Authority said brownouts must be addressed on a long term.
The Zamboanga City Electric Cooperative (ZAMCELCO) alone is implementing one of the longest rotational brownouts, an average of seven hours and a minimum of five hours.
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.