Minamata disease Syllabification: (Min·a·ma·ta dis·ease)Pronunciation: /ˌmēnəˈmätə/Definition of Minamata disease noun chronic poisoning by alkyl mercury compounds from industrial waste, characterized by (usually permanent) impairment of brain functions such as speech, sight, and muscular coordination. Origin: 1950s: named after Minamata, a town in JapanMinamata disease in other Oxford dictionaries Definition of Minamata disease in the British & World English dictionary