Oxford Dictionary English nervous system nounnoun BrE BrE//ˈnɜːvəs sɪstəm// ; NAmE NAmE//ˈnɜːrvəs sɪstəm// Internal anatomy Add to my wordlistjump to other results the system of all the nerves in the body see also central nervous system See related entries: Internal anatomySee nervous system in the Oxford Learner's Dictionary of Academic EnglishSee nervous system in the Oxford Advanced American DictionaryCheck pronunciation: nervous system oxfordlearnersdictionaries.com