'Serum' definitions:

Definition of 'serum'

From: WordNet
noun
An amber, watery fluid, rich in proteins, that separates out when blood coagulates [syn: serum, blood serum]

Definition of 'Serum'

From: GCIDE
  • Serum \Se"rum\ (s[=e]"r[u^]m), n. [L., akin to Gr. ???, Skr. s[=a]ra curd.] (Physiol.) (a) The watery portion of certain animal fluids, as blood, milk, etc. (b) A thin watery fluid, containing more or less albumin, secreted by the serous membranes of the body, such as the pericardium and peritoneum. [1913 Webster]
  • Blood serum, the pale yellowish fluid which exudes from the clot formed in the coagulation of the blood; the liquid portion of the blood, after removal of the blood corpuscles and the fibrin.
  • Muscle serum, the thin watery fluid which separates from the muscles after coagulation of the muscle plasma; the watery portion of the plasma. See Muscle plasma, under Plasma.
  • Serum albumin (Physiol. Chem.), an albuminous body, closely related to egg albumin, present in nearly all serous fluids; esp., the albumin of blood serum.
  • Serum globulin (Physiol. Chem.), paraglobulin.
  • Serum of milk (Physiol. Chem.), the whey, or fluid portion of milk, remaining after removal of the casein and fat. [1913 Webster]

Synonyms of 'serum'

From: Moby Thesaurus