blackout

American  

[blak-out] / ˈblækˌaʊt /

noun

• blackouts
  plural

1. the extinguishing or concealment of all visible lights in a city, military post, etc., usually as a precaution against air raids.

2. a period during a massive power failure when the lack of electricity for illumination results in utter darkness except from emergency sources, as candles.

3. Theater.

   1. the extinguishing of all stage lights, as in closing a vaudeville skit or separating the scenes of a play.

   2. Also called blackout skit.  a skit ending in a blackout.

4. Pathology.

   1. temporary loss of consciousness or vision.

      She suffered a blackout from the blow on the head.

   2. a period of total memory loss, as one induced by an accident or prolonged alcoholic drinking.

      The patient cannot account for the bizarre things he did during his blackout.

5. a brief, passing lapse of memory.

   An actor may have an occasional blackout and forget a line or two.

6. complete stoppage of a communications medium, as by a strike, catastrophe, electrical storm, etc.: a radio blackout.

   a newspaper blackout;

   a radio blackout.

7. a stoppage, suppression, or obliteration.

   a news blackout.

8. a period during which a special sales offer, fare rate, or other bargain is not available.

   The airline's discount on fares does not apply during the Christmas week blackout.

9. Radio and Television. a prohibition that is imposed on the broadcasting of an event and has the purpose of encouraging or ensuring ticket sales.

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blackout British  

/ ˈblækaʊt /

noun

1. the extinguishing or hiding of all artificial light, esp in a city visible to an enemy attack from the air

2. a momentary loss of consciousness, vision, or memory

3. a temporary electrical power failure or cut

4. electronics a temporary loss of sensitivity in a valve following a short strong pulse

5. a temporary loss of radio communications between a spacecraft and earth, esp on re-entry into the earth's atmosphere

6. the suspension of radio or television broadcasting, as by a strike or for political reasons

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verb

1. (tr) to obliterate or extinguish (lights)

2. (tr) to create a blackout in (a city etc)

3. (intr) to lose vision, consciousness, or memory temporarily

4. (tr, adverb) to stop (news, a television programme) from being released or broadcast

blackout Cultural  

1. The complete loss of electrical power in a particular area. Blackouts can result from a natural disaster, a manmade catastrophe, or simply from an excess of energy demand over supply. (Compare brownout.)

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Discover More

Rolling blackouts to match supply and demand have become increasingly common in the United States.

Other Word Forms

Noun Inflected Forms

• blackouts
  plural

Etymology

Origin of blackout

First recorded in 1910–15; noun use of verb phrase black out

Explanation

A blackout is a sudden loss of electricity in a town or city. If you experience a blackout, it's helpful to have flashlights and candles handy. During a war or an energy crisis, a city may impose a blackout on its citizens, requiring them to turn off all lights and, during bombing raids, to cover windows and limit activity. There is also a figurative kind of blackout, when a government suppresses information deliberately, not allowing newspapers and TV stations to report what's really happening. Someone who faints or passes out experiences yet another kind of blackout, a loss of consciousness.

Example Sentences

See Examples For:

blackout blackouts

That’s also as earnings continue to surprise on the upside, valuations are getting more attractive and corporate-buyback demand is set to pick up as blackout windows expire, Rubner added.

From MarketWatch ● Aug. 4, 2026

It has been declared just once before, when a major power blackout affected the Iberian Peninsula last year.

From The Wall Street Journal ● Jul. 24, 2026

What followed over the next several days was an almost total blackout of the president’s speech across Fox’s airwaves.

From Salon ● Jul. 22, 2026

No amount of darkness, earplugs or blackout blinds can entirely silence it.

From BBC ● Jul. 19, 2026

A blackout curtain is moved aside in a second-floor window.

From "The Bletchley Riddle" by Ruta Sepetys and Steve Sheinkin

Herry Kabut, editor-in-chief of local publication Floresa Media, told the BBC that "each resident has set up their own evacuation post" amid blackouts, landslides and roadblocks.

From BBC ● Aug. 17, 2026

But California hasn’t seen rolling blackouts since that year in large part due to its massive increase in battery energy storage, Seeley said.

From Los Angeles Times ● Aug. 16, 2026

For more than a decade, Cox has refused to carry the channel, owned by the Dodgers organization, because of its high license fee — leading to one of the television industry’s longest blackouts.

From Los Angeles Times ● Aug. 14, 2026

The solar push accelerated after a series of nationwide blackouts in 2024, in part because Cuba’s imports of crude oil from Venezuela collapsed, said Ricardo Torres Pérez, a Cuban economist at American University.

From The Wall Street Journal ● Aug. 9, 2026

It wouldn’t hurt to have another one, he thought, in case the blackouts continued.

From "The Dead and the Gone" by Susan Beth Pfeffer

Related Words

• collapse