Come together or open into each other:
— The blood vessels anastomose.

synonym: inosculate.

Roget 219: cross, decussate^†; intersect, interlace, intertwine, intertwist^†, interweave, interdigitate, interlink.    twine, entwine, weave, inweave^†, twist, wreathe; anastomose [Med.], inosculate^†, dovetail, splice, link; lace, tat.    mat, plait, plat, braid, felt, twill; tangle, entangle, ravel; net, knot; dishevel, raddle^†.    ... show more

Cause to join or open into each other by anastomosis:
— Anastomose blood vessels.

synonym: inosculate.