[ uh-nas-tuh-moh-sis ]
/ əˌnæs təˈmoʊ sɪs /

noun, plural a·nas·to·mo·ses [uh-nas-tuh-moh-seez] /əˌnæs təˈmoʊ siz/.

Anatomy. communication between blood vessels by means of collateral channels, especially when usual routes are obstructed.
Biology, Geology. connection between parts of any branching system, as veinlets in a leaf or branches of a stream.
Surgery, Pathology. a joining of or opening between two organs or spaces that normally are not connected.

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 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for anastomotic

  • While these changes are taking place the collateral arteries become enlarged, and an anastomotic circulation is established.

    Manual of Surgery|Alexis Thomson and Alexander Miles

British Dictionary definitions for anastomotic


/ (əˌnæstəˈməʊsɪs) /

noun plural -ses (-siːz)

a natural connection between two tubular structures, such as blood vessels
the surgical union of two hollow organs or parts that are normally separate
the separation and rejoining in a reticulate pattern of the veins of a leaf or of branches
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 anastomotic



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

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for anastomotic


[ ə-năs′tə-mōsĭs ]

n. pl. a•nas•to•mo•ses (-sēz)

The direct or indirect connection of separate parts of a branching system to form a network, especially among blood vessels.
The surgical connection of separate or severed tubular hollow organs to form a continuous channel as between two parts of the intestine.
An opening created by surgery, trauma, or disease between two or more normally separate spaces or organs.
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.