attending /əˈtɛndɪŋ/adjective 3noun 1forms 1 adjective3 •That attend or attends; that is or are in attendance; attendant. •Serving on the staff of a teaching hospital as a doctor. •Attendant, concomitant. noun1 •(US, Canada) A physician on the staff of a hospital, especially the principal one that supervises a patient's care.She's an attending in gastroenterology at Mass General. formsattendings