insensible water loss
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the amount by which a quantity or group is diminished; something that escapes from its owner's possession.
hearing loss see hearing loss.
insensible loss (insensible water loss) the amount of fluid lost on a daily basis from the lungs, skin, and respiratory tract, as well as water excreted in the feces; the exact amount cannot be measured, but it is estimated to be between 40 cc and 600 cc in an adult under normal circumstances. See also sweating.