Anastomosis \A*nas`to*mo"sis\, n.; pl. {Anastomoses}. [NL., fr. Gr. ? opening, fr. ? to furnish with a mouth or opening, to open; ? + ? mouth: cf. F. anastomose.] (Anat. & Bot.) The inosculation of vessels, or intercommunication between two or more vessels or nerves, as the cross communication between arteries or veins. [1913 Webster]