rhi·ni·tis \rīˈnīd.ə̇s\noun (pluralrhinit·i·des \-ˈnid.əˌdēz\) Etymology: New Latin, from rhin- + -itis 1.: inflammation of the mucous membrane of the nose from infectious, allergic, or other causes: as a.: common cold b.: coryza b 2.: bullnose of swine