accompanying vein

Medical Dictionary

accompanying vein ac·com·pa·ny·ing vein (ə-kŭm'pə-nē-ĭng, ə-kŭmp'nē-ĭng)
n.

  1. A vein accompanying another structure.

  2. Either of a pair of veins, occasionally more, that closely accompany an artery in such a manner that the pulsations of the artery aid venous return.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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WordNet
accompanying vein

noun
a vein accompanying another structure; a vein may accompany an artery in such a way that the arterial pulses aid venous return 
WordNet® 3.0, © 2006 by Princeton University.
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