geriatricianWiktionary 原文英美构词拆解geriatricgeriatric词干ian-ian后缀-ian(as an adjective) From, related to, or like. · (as a noun) One from, belonging to, relating to, or like.词源说明From geriatric + -ian.释义名词noun1(medicine) A medical doctor specialising in the assessment and treatment of elderly people.