From The Collaborative International Dictionary of English v.0.44 [gcide]:
1. a suspension of radio or tv broadcasting. [WordNet 1.5]
2. any darkness resulting from the extinction of lights. [WordNet 1.5]
3. the failure of electric power for a general region sufficient to extinguish all normal lighting.
Syn: brownout, dimout. [WordNet 1.5]
4. a momentary loss of consciousness. [WordNet 1.5]
5. partial or total loss of memory. he has a total blackout for events of the evening
Syn: amnesia, memory loss. [WordNet 1.5]
6. a period during which artificial lighting is forbidden, as in a city as a precaution against an air raid. [PJC]
7. (Theater) the darkening of all stage lights, as at then end of a performance or between acts. [PJC]
8. suppression of information distribution; as, there was a blackout on news from the military for the first day of the Gulf War. [PJC]
9. the prohibition of the broadcasting of a sports event, such as a boxing match or football game, sometimes confined to one particular area. It is usually done to encourage sales of tickets to the event. [PJC]
From WordNet (r) 2.0 [wn]:
noun
1: a suspension of radio or tv broadcasting
2: darkness resulting from the extinction of lights (as in a city invisible to enemy aircraft) [syn: {brownout}, {dimout}]
3: the failure of electric power for a general region
4: a momentary loss of consciousness
5: partial or total loss of memory; "he has a total blackout for events of the evening" [syn: {amnesia}, {memory loss}]
From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:
87 Moby Thesaurus words for "blackout": KO, agnosia, amnesia, anoxia, asteroids, aurora particles, bamboo curtain, barrier of secrecy, blocking, brownout, catalepsy, catatonia, catatony, censorship, coma, cosmic particles, cosmic ray bombardment, curtain, dematerialization, departure, dimout, disappearance, disappearing, dispersion, dissipation, dissolution, dissolving, eclipse, elimination, erasure, evanescence, evaporation, extinction, fadeaway, fadeout, fading, faint, fugue, going, grayout, hush-up, intergalactic matter, iron curtain, ironbound security, kayo, knockout, lipothymia, lipothymy, loss of memory, melting, meteor dust impacts, meteors, nirvana, nirvana principle, nothingness, oath of secrecy, oblivion, obliviousness, occultation, official secrecy, pall, passing, pressure suit, radiation, repression, seal of secrecy, security, semiconsciousness, senselessness, sleep, smothering, space bullets, stifling, stupor, suppression, swoon, syncope, the bends, unconsciousness, vanishing, vanishing point, veil, veil of secrecy, weightlessness, wipe, word deafness, wraps
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