coryzaPronunciation: /kəˈrʌɪzə/Definition of coryza noun [mass noun] Medicine catarrhal inflammation of the mucous membrane in the nose, caused especially by a cold or by hay fever: a patient suffering from acute coryzaOrigin: early 16th century: from Latin, from Greek koruza 'nasal mucus'coryza in other Oxford dictionaries Definition of coryza in the US English dictionary