a·nas·to·mo·sis / əˌnastəˈmōsis/ • n. (pl. -ses / -sēz/ ) technical a cross-connection between adjacent channels, fibers, or other parts of a network. ∎ Med. a connection made surgically between adjacent blood vessels, parts of the intestine, or other channels of the body, or the operation in which this is constructed.DERIVATIVES: a·nas·to·mot·ic / -ˈmätik/ adj. & n.

anastomosis (ă-nass-tŏ-moh-sis) n.
1. (in anatomy) a communication between two blood vessels without any intervening capillary network. arteriovenous a. a thick-walled blood vessel that connects an arteriole directly with a venule, found in the skin of the lips, nose, ears, hands, and feet.

2. (in surgery) an artificial connection between two tubular organs or parts, especially between two normally separate parts of the intestine or two blood vessels. See also shunt.

anastomosis In woody plants, the linking of branches.

anastomosis In woody plants, the linking of branches.