redout


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redout

(rĕd′out′)
n.
A sudden reddening of the visual field accompanied by severe headache and caused by engorgement of the blood vessels of the head when a person is subjected to a negative force of gravity, as in stunt flying.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

redout

Temporary reddening of the field of vision caused by exposure to reversed gravitation forces so that blood is forced into the head.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
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