A blood vessel accompanying another vessel or a nerve; the veins accompanying an artery, often two in number, are called venae comitantes or venae comites. [L. a companion, fr. com-, together, + eo, pp. itus, to go]
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co·mes (koґmēz) pl. comґites [L. “companionâ€] an artery or vein that accompanies another artery, a vein, or a nerve trunk; see also terms beginning arteria comitans and vena comitans.Medical dictionary. 2011.