hyperalgesia Syllabification: (hy·per·al·ge·si·a)Pronunciation: /ˌhīpəralˈjēzēə, -ˈjēsēə/Definition of hyperalgesia noun Medicine abnormally heightened sensitivity to pain. Derivatives hyperalgesicPronunciation: /-ˈjēzik, -ˈjēsik/ adjective hyperalgesia in other Oxford dictionaries Definition of hyperalgesia in the British & World English dictionary