Kanagawa phenomenon

Ka·na·ga·wa phe·nom·e·non

(kah-nah-gow'ă fĕ-nom'ĕ-non) Production of beta-hemolysis on a special high-salt mannitol medium (Wagatsuma agar) by most strains of Vibrio parahaemolyticus, which produces a heat-stable hemolysin. [Kanagawa, Japanese prefecture where first discovered]