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body fluid

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noun
  1. any of various types of fluid found in the body of a human or animal, as blood or urine.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
body fluid in Medicine

body fluid

n.
  1. A natural bodily fluid or secretion of fluid such as blood, semen, or saliva.
  2. Total body water, contained principally in blood plasma and in intracellular and interstitial fluids.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.