thin and weak, usually because of illness or lack of food He was thirty, but looked fifty, with pale skin, hopeless eyes and an emaciated body.
NAmE//ɪˌmeɪʃiˈeɪʃn//
noun [uncountable] She was very thin, almost to the point of emaciation.See emaciated in the Oxford Advanced Learner's DictionaryCheck pronunciation: emaciated