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[il-ee-uh s] /ˈɪl i əs/
noun, Pathology.
intestinal obstruction characterized by lack of peristalsis and leading to severe colicky pain and vomiting.
Origin of ileus
1700-10; < Latin īleus colic < Greek eileós, equivalent to eile- (stem of eílein to roll) + -os noun suffix Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for ileus
Historical Examples
  • In respect to the introsusception and hernia, see ileus, Class I. 3.

    Zoonomia, Vol. II

    Erasmus Darwin
  • That is natural, but it is a shock to have him here described as son of ileus.

  • The son of ileus is "Ajax the less," a hero of the second rank.

  • Is the seat or cause of the ileus always below the valve of the colon, and that of the cholera above it?

    Zoonomia, Vol. II

    Erasmus Darwin
  • Whence it appears, that the enteritis with hard quick pulse differs from ileus, described in Class I. 3.

    Zoonomia, Vol. II

    Erasmus Darwin
  • Calomel from ten to twenty grains given in small pills as in ileus; these means used early in the disease generally succeed.

    Zoonomia, Vol. II

    Erasmus Darwin
British Dictionary definitions for ileus


obstruction of the intestine, esp the ileum, by mechanical occlusion or as the result of distension of the bowel following loss of muscular action
Word Origin
C18: from Latin īleos severe colic, from Greek eileos a rolling, twisting, from eilein to roll
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for ileus

painful intestinal condition, 1706, from Latin ileus "severe colic," from Greek ileos "colic," from eilein "to turn, squeeze," from PIE *wel- "to turn, roll" (see volvox).

Online Etymology Dictionary, © 2010 Douglas Harper
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ileus in Medicine

ileus il·e·us (ĭl'ē-əs)
Intestinal obstruction causing severe colicky pain, vomiting, constipation, and often fever and dehydration.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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