• synonyms


verb (used with or without object), a·nas·to·mosed, a·nas·to·mos·ing. Physiology, Anatomy, Geology.
  1. to communicate or connect by anastomosis.
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Origin of anastomose

First recorded in 1690–1700; back formation from anastomosis


noun, plural a·nas·to·mo·ses [uh-nas-tuh-moh-seez] /əˌnæs təˈmoʊ siz/.
  1. Anatomy. communication between blood vessels by means of collateral channels, especially when usual routes are obstructed.
  2. Biology, Geology. connection between parts of any branching system, as veinlets in a leaf or branches of a stream.
  3. Surgery, Pathology. a joining of or opening between two organs or spaces that normally are not connected.
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Origin of anastomosis

1605–15; < New Latin < Greek: opening. See ana-, stoma, -osis
Related formsa·nas·to·mot·ic [uh-nas-tuh-mot-ik] /əˌnæs təˈmɒt ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for anastomoses

Historical Examples of anastomoses

  • Galen, you may remember, recognized that there were anastomoses, but Harvey preferred the idea of filtration.

    The Evolution of Modern Medicine

    William Osler

  • Here it enters the interior of the bone (the semilunar sinus) and anastomoses with the corresponding artery of the opposite side.

    Diseases of the Horse's Foot

    Harry Caulton Reeks

  • In the limbs as in the lungs the blood passes from artery to vein by anastomoses and porosities.

British Dictionary definitions for anastomoses


  1. to join (two parts of a blood vessel, etc) by anastomosis
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noun plural -ses (-siːz)
  1. a natural connection between two tubular structures, such as blood vessels
  2. the surgical union of two hollow organs or parts that are normally separate
  3. the separation and rejoining in a reticulate pattern of the veins of a leaf or of branches
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Derived Formsanastomotic (əˌnæstəˈmɒtɪk), adjective

Word Origin for anastomosis

C16: via New Latin from Greek: opening, from anastomoun to equip with a mouth, from stoma mouth
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

Word Origin and History for anastomoses



1610s, medical or Modern Latin, from Greek anastomosis "outlet, opening," from anastomoein "to furnish with a mouth," from stoma "mouth" (see stoma). Related: Anastomotic.

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Online Etymology Dictionary, © 2010 Douglas Harper

anastomoses in Medicine


(ə-năstə-mōz′, -mōs′)
  1. To join by anastomosis.
  2. To be connected by anastomosis.
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n. pl. a•nas•to•mo•ses (-sēz)
  1. The direct or indirect connection of separate parts of a branching system to form a network, especially among blood vessels.
  2. The surgical connection of separate or severed tubular hollow organs to form a continuous channel as between two parts of the intestine.
  3. An opening created by surgery, trauma, or disease between two or more normally separate spaces or organs.
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Related formsa•nas′to•motic (-mŏtĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.