Etymology
The word "blackout" is a compound word, formed from the words "black" and "out."
Meaning
A blackout is a complete loss of consciousness due to a temporary cessation of blood flow to the brain. It can be caused by a variety of factors, including:
Origin
The first known use of the word "blackout" in the context of a loss of consciousness was in 1891. It was used to describe a condition that occurred in soldiers during the American Civil War. The soldiers would suddenly lose consciousness and fall to the ground, as if they had been knocked out. They would then regain consciousness a few minutes later, but would be unable to remember what had happened.
The term "blackout" was later adopted by the medical community to describe a similar condition that could occur in people who were not soldiers. In the early 20th century, blackouts were thought to be caused by a temporary loss of blood flow to the brain. This idea was later found to be incorrect, but the term "blackout" has continued to be used to describe this condition.
Etymology The word black is derived from the Old English word blac which is cognate
Etymology The word black is derived from the Old English word blac which is cognate
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Etymology The word blackout is a compound word formed from the words black and out
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