accessory cephalic vein accessory cephalic vein /əkˈsɛsəri sɪˈfælɪk veɪn/

noun

1. A vein that passes along the radial edge of the forearm and joins the cephalic vein near the elbow  ( accessory cephalic vein , vena cephalica accessoria )
   a vein that passes along the radial edge of the forearm and joins the cephalic vein near the elbow