Inosculation

noun

1. The union of two vessels of an animal body by openings into each other, so as to permit the passage of a fluid; anastomosis.
2. Hence Some analogous union or relation; a running together; junction: as, in botany, the inosculation of the veins of a leaf, or of a scion with the stock in grafting.
3. The junction or connection of vessels, channels, or passages, so that their contents pass from one to the other; union by mouths or ducts; anastomosis; intercommunication

   "inosculation of veins, etc."

4. The junction or connection of vessels, channels, or passages, so that their contents pass from one to the other; union by mouths or ducts; intercommunication.
5. a natural or surgical joining of parts or branches of tubular structures so as to make or become continuous