|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|
|7.||(tr) to obliterate or extinguish (lights)|
|8.||(tr) to create a blackout in (a city etc)|
|9.||(intr) to lose vision, consciousness, or memory temporarily|
|10.||(tr, adverb) to stop (news, a television programme) from being released or broadcast|
blackout black·out (blāk'out')
Temporary loss of consciousness due to decreased blood flow to the brain.
Temporary loss of memory.
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.)
Note: Rolling blackouts to match supply and demand have become increasingly common in the United States.