angiostomy

an·gi·os·to·my .an-jē-'äs-tə-mē n, pl -mies the surgical establishment of an opening into a blood vessel esp. through a cannula

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an·gi·os·to·my (an″je-osґtə-me) [angio- + -stomy] 1. the creation of an opening into a blood vessel. 2. the opening so made.