paediatricEnglishOxford Dictionary of Englishpaediatric /ˌpiːdiˈatrɪk / (US English pediatric) ▸ adjective relating to the branch of medicine dealing with children and their diseases: the hospital's paediatric ward paediatric oncology. – ORIGIN mid 19th century: from paedo- ‘of children’ + iatric ‘relating to a physician or to medicine’, after modern Latin paediatricus.