vena comitans
noun
vena co·mi·tans
| \ -ˈkō-mə-ˌtanz
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plural venae comitantes\ -ˌkō-mə-ˈtan-ˌtēz
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Medical Definition of vena comitans
: a vein accompanying an artery
The accompaniment is so complete, in fact, that for much of the route up the arm, the vein network forms true venae comitantes, or parallel paired veins on either side of the artery.— Walter Carl Hartwig, Fundamental Anatomy, 2008