Serum

['sɪərəm] or ['sɪrəm]

(noun.) an amber, watery fluid, rich in proteins, that separates out when blood coagulates.

Typed by Elroy--From WordNet

(n.) The watery portion of certain animal fluids, as blood, milk, etc.

(n.) A thin watery fluid, containing more or less albumin, secreted by the serous membranes of the body, such as the pericardium and peritoneum.

Edited by Ervin

n. the watery part of curdled milk whey: the thin fluid which separates from the blood when it coagulates.

Typist: Ursula

Typist: Stanley