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Reduction or deprivation of water.
[hydro- + G. penia, poverty]


1 the process of removing water from a living thing.
2 the condition resulting from lack of water in the body tissues.


(hī″drō-pē′nē-ă) [″ + penia, poverty]
A deficiency of water in the body.

hydropenia (hī·drō·pēˑ·nē·),

n condition marked by water deficiency in body tissues.
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Effective glomerular filtration pressure and single nephron filtration rate during hydropenia, elevated ureteral pressure, and acute volume expansion with isotonic saline.