endarterectomy Syllabification: (end·ar·ter·ec·to·my)Pronunciation: /ˌendärtəˈrektəmē/Definition of endarterectomy noun (plural endarterectomies) surgical removal of part of the inner lining of an artery, together with any obstructive deposits, most often carried out on the carotid artery or on vessels supplying the legs. endarterectomy in other Oxford dictionaries Definition of endarterectomy in the British & World English dictionary