medakaPronunciation: /məˈdɑːkə/Definition of medaka noun a small, slender freshwater fish with the dorsal fin set back near the tail, native to parts of SE Asia and Japan. Family Oryziatidae and genus Oryzias: several species Origin: early 20th century: from Japanese me(y) 'eye' + -daka 'high'medaka in other Oxford dictionaries Definition of medaka in the US English dictionary
