Webster
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Webster’s Revised Unabridged Dictionary · 1913

Serum

Se′rum (sē′rŭm), n. [L., akin to Gr. ὀρός, Skr. sāra 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.

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.

Webster’s Revised Unabridged Dictionary, Noah Porter, editor (Springfield, Mass.: G. & C. Merriam, 1913). Public domain. Text as transcribed by MICRA, Inc., from Project Gutenberg. Changed for Deep Dive Bible: Greek, which our source spelled in Latin letters, set in Greek letters; entries of one spelling merged into one article; Greek words our source left out (shown as “?”), read from the 1898 printing, from the same plates (the Library of Congress’s copy), where the place could be found with certainty. Of the others, 1,362 (a word or a single letter each) were inferred by AI from the context by the dictionary’s own rules and are marked with a wavy underline (tap or point at one to see the note); the rest, which could not be inferred with confidence, are left as “?”.