red·out 
(rĕdout′)
(rĕdout′)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.
| 单词 | redout |
| 释义 | red·out (rĕdout′)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. |
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