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

  • intransitive v. To change into curd. See Synonyms at coagulate.
  • intransitive v. To become congealed as if by having changed into curd: The blood in my veins curdled at the horrific sight.
  • intransitive v. To go bad or become spoiled.
  • transitive v. To cause to change into or as if into curd.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. To form curds so that it no longer flows smoothly; to cause to form such curds. (usually said of milk)
  • v. To clot or coagulate; to cause to congeal, such as through cold. (metaphorically of blood)
  • v. To cause a liquid to spoil and form clumps so that it no longer flows smoothly

from the GNU version of the Collaborative International Dictionary of English

  • intransitive v. To change into curd; to coagulate.
  • intransitive v. To thicken; to congeal.
  • transitive v. To change into curd; to cause to coagulate.
  • transitive v. To congeal or thicken.

from The Century Dictionary and Cyclopedia

  • To change into curd; cause to thicken or coagulate.
  • To coagulate or thicken; become curd.

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

  • v. turn from a liquid to a solid mass
  • v. turn into curds
  • v. go bad or sour


Frequentative of curd.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Metathesis of Middle English crudle, from an Old English crudan ("to press, drive") via crud. (Wiktionary)


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  • Citation on pus.

    June 22, 2008