anas·​to·​mo·​sis | \ ə-ˌna-stə-ˈmō-səs How to pronounce anastomosis (audio) \
plural anastomoses\ ə-​ˌna-​stə-​ˈmō-​ˌsēz How to pronounce anastomosis (audio) \

Definition of anastomosis

1 : the union of parts or branches (as of streams, blood vessels, or leaf veins) so as to intercommunicate or interconnect
2 : a product of anastomosis : network

Other Words from anastomosis

anastomotic \ ə-​ˌna-​stə-​ˈmä-​tik How to pronounce anastomosis (audio) \ adjective

First Known Use of anastomosis

1541, in the meaning defined at sense 1

History and Etymology for anastomosis

Late Latin, from Greek anastomōsis, from anastomoun to provide with an outlet, from ana- + stoma mouth, opening — more at stomach entry 1

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The first known use of anastomosis was in 1541

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Cite this Entry

“Anastomosis.” Dictionary, Merriam-Webster, Accessed 19 Jan. 2021.

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More Definitions for anastomosis


anas·​to·​mo·​sis | \ ə-ˌnas-tə-ˈmō-səs How to pronounce anastomosis (audio) , ˌan-əs- How to pronounce anastomosis (audio) \
plural anastomoses\ -​ˌsēz How to pronounce anastomosis (audio) \

Medical Definition of anastomosis

1a : a communication between or coalescence of blood vessels
b : the surgical union of parts and especially hollow tubular parts anastomosis of the ureter and colon is surgically practicable
2 : a product of anastomosis especially : a network (as of channels or branches) produced by anastomosis

Other Words from anastomosis

anastomotic \ -​ˈmät-​ik How to pronounce anastomosis (audio) \ adjective

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