- the clear, pale-yellow liquid that separates from the clot in the coagulation of blood; blood serum.
- immune serum.
- any watery animal fluid.
- the thin, clear part of the fluid of plants.
- milk whey.
- See blood serum
- antitoxin obtained from the blood serum of immunized animals
- clear watery fluid, esp that exuded by serous membranes
- a less common word for whey
