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Definition of hypovolemia in US English - a decreased volume of circulating blood in the body.
Hypovolemia Definition. Hypovolemia is a condition, where the blood volume decreases, otherwise decrease in blood plasma volume occurs. Thus, it is the volume contractionâs intravascular component, or blood volume loss due to hemorrhage and dehydration.Hence, sometimes, volume contraction and hypovolemia are used synonymously.ypovolemia is represented by depletion of sodium (salt), thereby differing from dehydration, and meaning excessive water loss from the body. Historically, hypovolemia was termed desanguination meaning extensive loss of blood (derived from the Latin word sanguis, meaning blood). Hippocrates widely used this term.