Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The clear yellowish fluid obtained upon separating whole blood into its solid and liquid components after it has been allowed to clot. Also called blood serum.
  • n. Blood serum from the tissues of immunized animals, containing antibodies and used to transfer immunity to another individual.
  • n. Watery fluid from animal tissue, such as that found in edema.
  • n. Whey.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The clear yellowish fluid obtained upon separating whole blood into its solid and liquid components after it has been allowed to clot. Also called blood serum.
  • n. Blood serum from the tissues of immunized animals, containing antibodies and used to transfer immunity to another individual, called antiserum.
  • n. A watery fluid from animal tissue, especially one that moistens the surface of serous membranes or that is exuded by such membranes when they become inflamed, such as in edema or a blister.
  • n. The watery portion of certain animal fluids, as blood, milk, etc; whey.
  • n. An intensive moisturising product to be applied after cleansing but before a general moisturiser.

from the GNU version of the Collaborative International Dictionary of English

  • 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.

from The Century Dictionary and Cyclopedia

  • n. The thin part of milk separated from the curd and oil; whey. Also called serum lactis.
  • n. The clear pale-yellow liquid which separates from the clot in coagulation of the blood; blood-serum.
  • n. Any serous liquid, as chyle or lymph.
  • n. The blood-serum of an animal which has been rendered immune against some disease by injections of increasing quantities of the micro-organism of such disease; antitoxin. See serum diagnosis and immunity, 5.
  • n. An antidiphtheritic serum.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. an amber, watery fluid, rich in proteins, that separates out when blood coagulates

Etymologies

Latin, whey, serum.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin serum ("whey"). Cognates: French sérum, Spanish suero, Italian siere, siero. (Wiktionary)

Examples

Wordnik is becoming a not-for-profit! Read our announcement here.

Comments

Log in or sign up to get involved in the conversation. It's quick and easy.