1) Blood disease 2) Blood disorder 3) Hypovolemia 1) Hypovolemia 
a state where the circulating blood volume is reduced. This can occur due to haemorrhage, or other loss of fluid, such as dehydration. It can lead to shock.
(hypo- + volume + Gr. haima blood + -ia) abnormally decreased volume of circulating fluid (plasma) in the body.
Lower that normal volume of blood in the body. It may be as a result of blood loss following an injury.
A state where the circulating blood volume is reduced. This can occur due to haemorrhage, or other loss of fluid, such as dehydration. It can lead to shock.
A term which describes a condition of abnormally low intravascular volume with a decreased volume of circulating plasma in the body. It can be due to blood loss or dehydration. ... Origin: Gr. Haima = blood ... (18 Nov 1997) ... 
Low circulating blood volume.